WO2024046443A1 - Macrocyclic compounds as selective cdk inhibitors - Google Patents
Macrocyclic compounds as selective cdk inhibitors Download PDFInfo
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- WO2024046443A1 WO2024046443A1 PCT/CN2023/116366 CN2023116366W WO2024046443A1 WO 2024046443 A1 WO2024046443 A1 WO 2024046443A1 CN 2023116366 W CN2023116366 W CN 2023116366W WO 2024046443 A1 WO2024046443 A1 WO 2024046443A1
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Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D231/00—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings
- C07D231/02—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings
- C07D231/10—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D231/14—Heterocyclic compounds containing 1,2-diazole or hydrogenated 1,2-diazole rings not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D231/38—Nitrogen atoms
- C07D231/40—Acylated on said nitrogen atom
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
- C07D498/12—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains three hetero rings
- C07D498/18—Bridged systems
Definitions
- the present disclosure generally relates to macrocyclic compounds as selective CDK inhibitors, compositions comprising the same, and methods of using the same, for inhibiting cyclin-dependent kinases and/or for treating cancer described herein.
- Cyclin-dependent kinases are important cellular enzymes that perform essential functions in regulating eukaryotic cell division and proliferation.
- the cyclin-dependent kinase catalytic units are activated by regulatory subunits known as cyclins. At least sixteen mammalian cyclins have been identified (Johnson DG, Walker CL. Cyclins and Cell Cycle Checkpoints. Annu. Rev. Pharmacol. Toxicol. (1999) 39: 295-312) .
- Cyclin B/CDK1, cyclin A/CDK2, cyclin E/CDK2, cyclin D/CDK4, cyclin D/CDK6, and likely other heterodynes are important regulators of cell cycle progression.
- cyclin/CDK heterodynes Additional functions include regulation of transcription, DNA repair, differentiation and apoptosis (Morgan DO. Cyclin-dependent kinases: engines, clocks, and microprocessors. Annu. Rev. Cell. Dev. Biol. (1997) 13: 261-291) .
- CDK2 Overexpression of CDK2 is associated with abnormal regulation of cell-cycle.
- the cyclin E/CDK2 complex plays and important role in regulation of the G1/Stransition, histone biosynthesis and centrosome duplication. Progressive phosphorylation of Rb by cyclin D/CDK4/6 and cyclin E/CDK2 releases the G1 transcription factor, E2F, and promotes S-phase entry. Activation of cyclin A/CDK2 during early S-phase promotes phosphorylation of endogenous substrates that permit DNA replication and inactivation of E2F, for S-phase completion. (Asghar et al. The history and future of targeting cyclin-dependent kinases in cancer therapy, Nat. Rev. Drug. Discov. 2015; 14 (2) : 130-146) .
- CDK2 knock out mice are viable with minimum defects, suggesting CDK2 is not essential for normal cell proliferation (Berthet et al., CDK2 knock out mice are viable. Curr Biol. (2003) 13 (20) : 1775-85) .
- selective CDK2 inhibitors may minimize clinical toxicity while being active in treating patients with high tumor cyclin E1 and/or E2 expression.
- a series of multitarget inhibitor CDK inhibitors are disclosed in WO2018033815A1, US20200247784A1, WO2022135442A1 and WO2022135365A1.
- major companies have identified and discovered a series of inhibitors that selectively inhibit CDK2 for the treatment of cancer and other diseases, such as Seliciclib, Dinaciclib, PF-07104091.
- Seliciclib which inhibits CDK2, 7, and 9 is being investigated for treatment of advanced solid tumors in conjunction with chemotherapy.
- Dinaciclib is a potent multitarget inhibitor of CDK1, 2, 5, and 9, is currently in clinical development for breast and hematological cancers.
- CDK2 inhibitor PF-07104091 is identical to the chemical structure for example 13 in WO2020157652, is currently in clinical development. Despite significant efforts, there are no approved agents targeting CDK2. An unmet medical need therefore exists for effective and safe CDK inhibitors, especially the CDK inhibitors having selectivity for CDK2.
- A-L2 moiety (Formula I shown on “SUMMARY” section) is specifically composed and designed for that purpose.
- a compound of formula I or a pharmaceutically acceptable salt thereof can inhibit the activity of CDKs, including CDK2, thereby effecting biological functions.
- the invention provides compounds that are selective for CDK2.
- the disclosure also provides pharmaceutical compositions and medicaments, comprising the compounds or salts of the invention.
- a process for preparing a pharmaceutical composition comprising mixing pharmaceutically acceptable excipients with a therapeutically effective amount of a compound with formula I or a pharmaceutically acceptable salt thereof.
- a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof for use in the prevention or treatment of cancer.
- a method of treating or preventing cancer comprising administering a therapeutically effective amount a compound with formula I or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof, to a subject in need.
- the disclosure also provides a use of a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof in the manufacture of a medicament for use in the treatment of cancer.
- the disclosure also provides a use of a compound with formulaIIas intermediate in the synthesis of a compound with formula I or a pharmaceutically acceptable salt thereof.
- the present invention provides compounds of formula I or a pharmaceutically acceptable salt thereof. Such compounds can inhibit the activity of CDKs, including CDK2. In some embodiments, the invention provides compounds that are selective for CDK2.
- L 1 is a saturated or unsaturated C 1-9 aliphatic chain optionally substituted with 1-9 R 1 , optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;
- L 2 is absent or is independently selected from group consisting of OH, saturated or unsaturated C 1-5 aliphatic chain optionally substituted with 1-5 R 2 , optionally 1-3 carbon atoms on the aliphatic chain are independently replaced with N, O, S;
- Ring A is absent or is selected from group consisting of optionally substituted 3-10 membered cycloalkyl, 3-10 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S;
- the compound of formula I or a pharmaceutically acceptable salt wherein:
- L 1 is a saturated or unsaturated C 3-9 aliphatic chain optionally substituted with 1-6 R 1 , optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;
- L 1 is selected from group consisting of optionally 1-6 R 1 substituted C 3-9 alkylene, C 3-9 heteroalkylene, C 3-9 alkenylene, C 3-9 heteroalkenylene, C 3-9 alkynylene, C 3-9 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O, S; more preferably, L 1 is selected from group consisting of optionally 1-4 R 1 substituted C 4-6 alkylene, C 4-6 heteroalkylene, C 4-6 alkenylene, C 4-6 heteroalkenylene, C 4-6 alkynylene, C 4-6 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O.
- the compound of formula I or a pharmaceutically acceptable salt wherein:
- the compound of formula I or a pharmaceutically acceptable salt wherein:
- the compound of formula I or a pharmaceutically acceptable salt wherein:
- Ring A is selected from group consisting of optionally substituted 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N;
- the compound of formula I or a pharmaceutically acceptable salt, wherein the compound is selected from:
- the compounds disclosed herein may exist as tautomers and optical isomers (e.g., enantiomers, diastereomers, diastereomeric mixtures, racemic mixtures, and the like) .
- Compounds provided herein can also include all isotopes of atoms occurring in the intermediates or final compounds.
- Isotopes include those atoms having the same atomic number but different mass numbers.
- isotopes of hydrogen include tritium and deuterium.
- One or more constituent atoms of the compounds of the invention can be replaced or substituted with isotopes of the atoms in natural or non-natural abundance.
- the compound includes at least one deuterium atom.
- one or more hydrogen atoms in a compound of the present disclosure can be replaced or substituted by deuterium.
- the compound includes two or more deuterium atoms.
- the compound includes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 deuterium atoms.
- Synthetic methods for including isotopes into organic compounds are known in the art (Deuterium Labeling in Organic Chemistry by Alan F. Thomas (New York, N. Y., Appleton-Century-Crofts, 1971; The Renaissance of H/D Exchange by Jens Atzrodt, Volker Derdau, Thorsten Fey and Jochen Zimmermann, Angew. Chem. Int. Ed. 2007, 7744-7765; The Organic Chemistry of Isotopic Labelling by James R. Hanson, Royal Society of Chemistry, 2011) .
- Isotopically labeled compounds can be used in various studies such as NMR spectroscopy, metabolism experiments, and/or assays.
- any atom not specifically designated as a particular isotope is meant to represent any stable isotope of that atom.
- a position is designated specifically as “H” or “hydrogen, ” the position is understood to have hydrogen at its natural abundance isotopic composition.
- a position is designated specifically as “D” or “deuterium” , the position is understood to have deuterium at an abundance that is at least 3000 times greater than the natural abundance of deuterium, which is 0.015% (i.e., at least 45%incorporation of deuterium) .
- a pharmaceutical composition comprising a compound with formula I or a pharmaceutically acceptable salt thereof and pharmaceutical excipients.
- a process for preparing a pharmaceutical composition comprising mixing pharmaceutically acceptable excipients with a therapeutically effective amount of a compound with formula I or a pharmaceutically acceptable salt thereof.
- composition refers to a mixture of at least one compound useful within the disclosure with a pharmaceutically acceptable carrier.
- the pharmaceutical composition facilitates administration of the compound to a patient or subject. Multiple techniques of administering a compound exist in the art including, but not limited to, intravenous, oral, aerosol, parenteral, ophthalmic, pulmonary, and topical administration.
- the term “pharmaceutically acceptable carrier” means a pharmaceutically acceptable material, composition or carrier, such as a liquid or solid filler, stabilizer, dispersing agent, suspending agent, diluent, excipient, thickening agent, solvent or encapsulating material, involved in carrying or transporting a compound useful within the disclosure within or to the patient such that it may perform its intended function.
- a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof for use in the prevention or treatment of cancer.
- a method of treating or preventing cancer comprising administering a therapeutically effective amount a compound with formula I or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof, to a subject in need.
- the disclosure also provides a use of a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof in the manufacture of a medicament for use in the treatment of cancer.
- the cancer is breast cancer, ovarian cancer, bladder cancer, uterine cancer, prostate cancer, lung cancer (including NSCLC, SCLC, squamous cell carcinoma or adenocarcinoma) , esophageal cancer, head and neck cancer, colorectal cancer, kidney cancer (including RCC) , liver cancer (including HCC) , pancreatic cancer, stomach (including gastric) cancer and/or thyroid cancer.
- lung cancer including NSCLC, SCLC, squamous cell carcinoma or adenocarcinoma
- esophageal cancer esophageal cancer
- head and neck cancer colorectal cancer
- kidney cancer including RCC
- liver cancer including HCC
- pancreatic cancer including gastric cancer and/or thyroid cancer.
- the breast cancer is selected from ER-positive/HR-positive, HER2-negative breast cancer, ER-positive/HR-positive, HER2-positive breast cancer, triple negative breast cancer (TNBC) , and inflammatory breast cancer.
- the breast cancer is selected from endocrine resistant breast cancer, trastuzumab resistant breast cancer, or breast cancer demonstrating primary or acquired resistance to CDK4/CDK6 inhibition.
- the cancer is advanced or metastatic cancer.
- the cancer is characterized by an amplification or overexpression of cyclin E1 and/or cyclin E2.
- the compound with formulaII is used as an intermediate in the synthesis of a compound with formula I or a pharmaceutically acceptable salt thereof.
- alkyl by itself or as part of another substituent means, unless otherwise stated, a straight or branched chain hydrocarbon having the number of carbon atoms designated (i.e., C 1 -C 6 alkyl means an alkyl having one to six carbon atoms) and includes straight and branched chains. Examples include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert butyl, pentyl, neopentyl, and hexyl. Other examples of C 1 -C 6 alkyl include ethyl, methyl, isopropyl, isobutyl, n-pentyl, and n-hexyl.
- aliphatic chain refers to organic chain containing at least two carbon atoms, which is including but not limited to alkylene, heteroalkylene, alkenylene, heteroalkenylene and heteroalkynylene.
- alkene refers to a monovalent group derived from a hydrocarbon moiety containing, in certain embodiments, from two to six, or two to eight carbon atoms having at least one carbon-carbon double bond.
- the alkenyl group may or may not be the point of attachment to another group.
- alkenyl includes, but is not limited to, ethenyl, 1-propenyl, 1-butenyl, heptenyl, octenyl and the like.
- aryl refers to an aromatic ring system having any suitable number of ring atoms and any suitable number of rings.
- Aryl groups can include any suitable number of ring atoms, such as, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16 ring atoms, as well as from 6 to 10, 6 to 12, or 6 to 14 ring members.
- Aryl groups can be monocyclic, fused to form bicyclic or tricyclic groups, or linked by a bond to form a biaryl group.
- Representative aryl groups include phenyl, naphthyl and biphenyl.
- Other aryl groups include benzyl, having a methylene linking group.
- aryl groups have from 6 to 12 ring members, such as phenyl, naphthyl or biphenyl. Other aryl groups have from 6 to 10 ring members, such as phenyl or naphthyl. Some other aryl groups have 6 ring members, such as phenyl.
- Aryl groups can be substituted or unsubstituted.
- alkylene refers to a straight or branched, saturated, aliphatic radical having the number of carbon atoms indicated (i.e., C 1-6 means one to six carbons) , and linking at least two other groups, i.e., a divalent hydrocarbon radical.
- the two moieties linked to the alkylene can be linked to the same atom or different atoms of the alkylene group.
- a straight chain alkylene can be the bivalent radical of - (CH 2 ) n-, where n is 1, 2, 3, 4, 5 or 6.
- Representative alkylene groups include, but are not limited to, methylene, ethylene, propylene, isopropylene, butylene, isobutylene, sec-butylene, pentylene and hexylene.
- alkenylene refers to a bivalent straight or branched hydrocarbon chain radical consisting solely of carbon and hydrogen atoms and containing at least one double bond.
- C 3 -C 9 alkenylene refers to a bivalent straight or branched hydrocarbon chain radical group consisting solely of carbon and hydrogen atoms, containing at least one double bond, and having from three to nine carbon atoms.
- Non-limiting examples of "C 3 -C 9 alkenylene” groups include prop-1-enylene (a C 3 alkenylene) , but-1-enylene (a C 4 alkenylene) , pent-1-enylene (a C 5 alkenylene) , pent-4-enylene (a C 5 alkenylene) , penta-1, 4-dienylene (a C 5 alkenylene) , hexa-1-enylene (a C 6 alkenylene) , hexa-2-enylene (a C 6 alkenylene) , hexa-3-enylene (a C 6 alkenylene) , hexa-1-, 4-dienylene (a C 6 alkenylene) , hexa-1-, 5-dienylene (a C 6 alkenylene) and hexa-2-, 4-dienylene (a C 6 alkenylene) .
- cycloalkylene refers to a cycloalkyl, as defined herein, having two monovalent radical centers derived by the removal of two hydrogen atoms from the same or two different carbon atoms of a parent cycloalkyl.
- examples of cycloalkylene include, but are not limited to, cyclopropylene, cyclobutylene, cyclopentylene and cyclohexylene.
- Cycloalkylenes of the present disclosure include monocyclic, bicylic and tricyclic ring structures.
- halo or “halogen” alone or as part of another substituent means, unless otherwise stated, a fluorine, chlorine, bromine, or iodine atom, preferably, fluorine, chlorine, or bromine, more preferably, fluorine or chlorine.
- cycloalkyl means a non-aromatic carbocyclic system that is fully saturated having 1, 2 or 3 rings wherein such rings may be fused.
- fused means that a second ring is present (i.e., attached or formed) by having two adjacent atoms in common (i.e., shared) with the first ring.
- Cycloalkyl also includes bicyclic structures that may be bridged or spirocyclic in nature with each individual ring within the bicycle varying from 3-8 atoms.
- cycloalkyl includes, but is not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, bicyclo [3.1.0] hexyl, spiro [3.3] heptanyl, and bicyclo [1.1.1] pentyl.
- haloalkyl refers to an alkyl group, as defined above, substituted with one or more halo substituents, wherein alkyl and halo are as defined herein.
- Haloalkyl includes, by way of example, chloromethyl, trifluoromethyl, bromoethyl, chlorofluoroethyl, and the like.
- heterocyclyl or “heterocycloalkyl” means a non-aromatic carbocyclic system containing 1, 2, 3, 4 heteroatoms selected independently from N, O or S and having 1, 2 or 3 rings wherein such rings may be fused, wherein fused is defined above.
- Heterocyclyl also includes bicyclic structures that may be Bridged-ring or Spiro-ring in nature with each individual ring within the bicycle varying from 3-8 atoms, and containing 0, 1, 2, 3 or 4 N, atoms.
- heterocyclyl includes cyclic esters (i.e., lactones) and cyclic amides (i.e., lactams) and also specifically includes, but is not limited to, epoxidyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl (i.e., oxanyl) , pyranyl, dioxanyl, aziridinyl, azetidinyl, pyrrolidinyl, 2, 5-dihydro-1H-pyrrolyl, oxazolidinyl, thiazolidinyl, piperidinyl, morpholinyl, piperazinyl, thiomorpholinyl, 1, 3-oxazinanyl, 1, 3-thiazinanyl, 2-azabicyclo- [2.1.1] hexanyl, 5-azabicyclo [2.1.1] hexanyl, 6-azabicyclo [3.1.1] heptanyl, 2-azabic
- the 1, 2, 3 or 4 heteroatoms on ring A is N, specifically includes, but is not limited to, aziridinyl, azetidinyl, pyrrolidinyl, 2, 5-dihydro-1H-pyrrolyl, piperidinyl, piperazinyl, 2-azabicyclo- [2.1.1] hexanyl, 5-azabicyclo [2.1.1] hexanyl, 6-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [2.2.1] -heptanyl, 3-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [3.1.1] heptanyl, 3-azabicyclo [3.1.0] -hexanyl, 2-azabicyclo [3.1.0] hexanyl, 3-azabicyclo [3.2.1] octanyl, 8-azabicyclo [3.2.1] octanyl, triazolyl, tetrazolyl.
- heteroaryl refers any mono-or bi-cyclic group composed of from 5 to 10 ring members, having at least one aromatic moiety and containing from 1 to 4 hetero atoms selected from oxygen, sulphur and nitrogen (including quaternary nitrogens) .
- substituted means that an atom or group of atoms has replaced hydrogen as the substituent attached to another group.
- the term “optionally substituted” means that the referenced group may be substituted or unsubstituted. In one embodiment, the referenced group is optionally substituted with zero substituents, i.e., the referenced group is unsubstituted. In another embodiment, the referenced group is optionally substituted with one or more additional group (s) individually and independently selected from groups described herein.
- the articles “a” and “an” refer to one or to more than one (i.e., to at least one) of the grammatical object of the article.
- an element means one element or more than one element.
- use of the term “including” as well as other forms, such as “include, ” “includes, ” and “included, ” is not limiting.
- administration refers to the providing a therapeutic agent to a subject.
- Multiple techniques of administering a therapeutic agent exist in the art including, but not limited to, intravenous, oral, aerosol, parenteral, ophthalmic, pulmonary, and topical administration.
- treat, ” “treated, ” “treating, ” or “treatment” includes the diminishment or alleviation of at least one symptom associated or caused by the state, disorder or disease being treated.
- prevent means no disorder or disease development if none had occurred, or no further disorder or disease development if there had already been development of the disorder or disease. Also considered is the ability of one to prevent some or all of the symptoms associated with the disorder or disease.
- the term “patient, ” “individual, ” or “subject” refers to a human or a non-human mammal.
- Non-human mammals include, for example, livestock and pets, such as ovine, bovine, porcine, canine, feline, and marine mammals.
- the patient, subject, or individual is human.
- the terms “effective amount, ” “pharmaceutically effective amount, ” and “therapeutically effective amount” refer to a nontoxic but sufficient amount of an agent to provide the desired biological result. That result may be reduction or alleviation of the signs, symptoms, or causes of a disease, or any other desired alteration of a biological system. An appropriate therapeutic amount in any individual case may be determined by one of ordinary skill in the art using routine experimentation.
- the term “pharmaceutically acceptable” refers to a material, such as a carrier or diluent, which does not abrogate the biological activity or properties of the compound, and is relatively non-toxic, i.e., the material may be administered to an individual without causing undesirable biological effects or interacting in a deleterious manner with any of the components of the composition in which it is contained.
- pharmaceutically acceptable salt refers to derivatives of the disclosed compounds wherein the parent compound is modified by converting an existing acid or base moiety to its salt form.
- pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid salts of basic residues such as formate.
- Step 1 ethyl 1- (5- ( (tert-butoxycarbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
- Step3 ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
- Step4 ethyl 1- (5- ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
- Step5 1- (5- ( ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylic acid
- Step6 (1 1 S, 1 3 R, Z) -2 1 - (tert-butyl) -2 1 H, 5 1 H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclop entanacyclotridecaphane-4, 12-dione
- Step7 (1 1 S, 1 3 R, Z) -2 1 H, 5 1 H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane-4, 12-dione
- Step 1 ethyl 1- (6- (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
- Step 2 ethyl 1- (6-aminohexyl) -1H-pyrazole-5-carboxylate
- Step 3 ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
- Step 4 ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
- Step 5 1- (6- ( ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylic acid
- Step 6 (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- Step 7 (11S, 13R, Z) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- Step 1 ethyl 1- (2-azidoethyl) -1H-pyrazole-5-carboxylate
- Step 2 ethyl 1- (2- (5- (aminomethyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate
- Step 3 ethyl 1- (2- (5- ( ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate
- Step 4 1- (2- (5- ( ( ( ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid
- Step 5 1- (2- (5- ( ( ( ( ( ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carb onyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid
- Step 6 (11S, 13R, Z) -21- (tert-butyl) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclododecaphane-4, 11-dione
- Step 7 (11S, 13R, Z) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1(1, 3) -cyclopentanacyclododecaphane-4, 11-dione
- Step 1 ethyl 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylate
- Step 2 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylic acid
- Step 3 tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( (tert-butyldimethylsilyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
- Step 4 tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3-hydroxycyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
- Step5 tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
- Step6 tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (1-cyanocyclopropyl) carbamoyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
- Step7 tert-butyl 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
- Step8 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetic acid
- Step9 (1'S, 3'R, Z) -1'- (tert-butyl) spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) - dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione
- Step 1 methyl 3-bromo-1- (6- ( (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
- Step 2 methyl 1- (6-aminohexyl) -3-bromo-1H-pyrazole-5-carboxylate
- Step 3 methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate
- Step 4 methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate
- Step 5 1- (6- ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylic acid
- Step 6 (11S, 13R, Z) -53-bromo-21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- Step 7 (11S, 13R, Z) -21- (tert-butyl) -53- ( (E) -styryl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- Step 8 (11S, 13R, Z) -21- (tert-butyl) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- Step 9 (11S, 13R, Z) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
- CDK1/Cyclin B1 assay The purpose of CDK1/Cyclin B1 assay is to evaluate the inhibition of small molecule inhibitors by using a luminescence-based ADP-Glo assay.
- CDK1/Cyclin B1 catalyzes the production of ADP from ATP with phosphoryl transferring to the substrate Histone H1 protein (SignalChem) .
- the ADP-Glo assay measures the amount of ADP to reflect the rate of kinase reaction. Wild-type CDK1 and wild-type Cyclin B1 enzyme complex was purchased from Proqinase.
- X log of inhibitor concentration
- Y %Inhibition
- CDK2/Cyclin E1 assay The purpose of CDK2/Cyclin E1 assay is to evaluate the inhibition of small molecule inhibitors by using a luminescence-based ADP-Glo assay.
- CDK2/Cyclin E1 catalyzes the production of ADP from ATP with phosphoryl transferring to the substrate Histone H1 protein (SignalChem) .
- the ADP-Glo assay measures the amount of ADP to reflect the rate of kinase reaction. Wild-type CDK2 and wild-type Cyclin E enzyme complex was purchased from Proqinase. Compounds dilutions were transferred into each well of 384-well assay plates (784075, Greiner) using Echo 550.2.5 ⁇ L 2 ⁇ enzyme was added into assay plate, room temperature for 10 mins.
- %Inhibition 100 - (Signalcmpd -SignalAve_PC) / (SignalAve_VC -SignalAve_PC) ⁇ 100.
- X log of inhibitor concentration
- Y %Inhibition
- the antiproliferation effect was assessed against the human ovarian adenocarcinoma cell lines based on DNA content measurement.
- the cell line NIH: OVCAR-3 (ATCC, HTB-161) were maintained in RPMI 1640 (Invitrogen, 11875-085) medium supplement with 20% (v/v) fetal bovine serum (BI, 04-002-1A) and 0.01 mg/mL insulin (Merck, 407709) .
- TOV-21G ATCC, CRL-11730
- Both cell lines were cultured according to the standard instruction of the American Type Culture Collection. The cell lines were authenticated by short tandem repeat profiling.
- Results of the CDK2 Biochemical Assay are presented in Table 2.
- Compounds having an IC 50 less than or equal to 50 nM are represented as "A” ; compounds having an IC 50 greater than 50 nM but less than or equal to 150 nM are represented as “B” ; compounds having an IC 50 greater than 150 nM but less than or equal to 300 nM are represented as "C” ; and compounds having an IC 50 greater than 300 nM are represented as "D” .
- Results of the CDK2 selectivity against CDK1 are presented in Table 2.
- Compounds having the selectivity less than or equal to 10-fold are represented as “D” ;
- Compounds having the selectivity greater than 100-fold are represented as "A” .
- Results of the Cell Assay are presented in Table 2.
- Compounds having an IC 50 less than or equal to 150 nM are represented as "A” ; compounds having an IC 50 greater than 150 nM hut less than or equal to 3 ⁇ M are represented as “B” ; compounds having an IC 50 greater than 3 ⁇ M but less than or equal to 30 ⁇ M are represented as "C” ; and compounds having an IC 50 greater than 30 ⁇ M are represented as "D” .
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Abstract
Provided herein are macrocyclic compounds, pharmaceutical compositions, and methods of using related to cyclin dependent kinases (CDKs). The compounds herein are selective CDK2 inhibitors, which can be used for treating cancer.
Description
The present disclosure generally relates to macrocyclic compounds as selective CDK inhibitors, compositions comprising the same, and methods of using the same, for inhibiting cyclin-dependent kinases and/or for treating cancer described herein.
Cyclin-dependent kinases (CDKs) are important cellular enzymes that perform essential functions in regulating eukaryotic cell division and proliferation. The cyclin-dependent kinase catalytic units are activated by regulatory subunits known as cyclins. At least sixteen mammalian cyclins have been identified (Johnson DG, Walker CL. Cyclins and Cell Cycle Checkpoints. Annu. Rev. Pharmacol. Toxicol. (1999) 39: 295-312) . Cyclin B/CDK1, cyclin A/CDK2, cyclin E/CDK2, cyclin D/CDK4, cyclin D/CDK6, and likely other heterodynes are important regulators of cell cycle progression. Additional functions of cyclin/CDK heterodynes include regulation of transcription, DNA repair, differentiation and apoptosis (Morgan DO. Cyclin-dependent kinases: engines, clocks, and microprocessors. Annu. Rev. Cell. Dev. Biol. (1997) 13: 261-291) .
Overexpression of CDK2 is associated with abnormal regulation of cell-cycle. The cyclin E/CDK2 complex plays and important role in regulation of the G1/Stransition, histone biosynthesis and centrosome duplication. Progressive phosphorylation of Rb by cyclin D/CDK4/6 and cyclin E/CDK2 releases the G1 transcription factor, E2F, and promotes S-phase entry. Activation of cyclin A/CDK2 during early S-phase promotes phosphorylation of endogenous substrates that permit DNA replication and inactivation of E2F, for S-phase completion. (Asghar et al. The history and future of targeting cyclin-dependent kinases in cancer therapy, Nat. Rev. Drug. Discov. 2015; 14 (2) : 130-146) .
The importance of CDK2 in proliferative pathways and the frequently altered CDK2/cyclin E1 activity in tumor highlights CDK2 as a target for cancer treatment. CDK2 knock out mice
are viable with minimum defects, suggesting CDK2 is not essential for normal cell proliferation (Berthet et al., CDK2 knock out mice are viable. Curr Biol. (2003) 13 (20) : 1775-85) . In addition, selective CDK2 inhibitors may minimize clinical toxicity while being active in treating patients with high tumor cyclin E1 and/or E2 expression.
A series of multitarget inhibitor CDK inhibitors are disclosed in WO2018033815A1, US20200247784A1, WO2022135442A1 and WO2022135365A1. In recent years, major companies have identified and discovered a series of inhibitors that selectively inhibit CDK2 for the treatment of cancer and other diseases, such as Seliciclib, Dinaciclib, PF-07104091. Seliciclib which inhibits CDK2, 7, and 9 is being investigated for treatment of advanced solid tumors in conjunction with chemotherapy. Dinaciclib is a potent multitarget inhibitor of CDK1, 2, 5, and 9, is currently in clinical development for breast and hematological cancers. Selective CDK2 inhibitor PF-07104091 is identical to the chemical structure for example 13 in WO2020157652, is currently in clinical development. Despite significant efforts, there are no approved agents targeting CDK2. An unmet medical need therefore exists for effective and safe CDK inhibitors, especially the CDK inhibitors having selectivity for CDK2.
AlloStarTM platform developed by Nutshell, carries out on CDK family, and the dynamic protein structure of CDK2 shows that the presence of an allosteric pocket adjacent to the ATP site can selectively affect the activity of CDK2 over CDK1. Thus, the inclusion of A-L2 moiety (Formula I shown on “SUMMARY” section) is specifically composed and designed for that purpose.
In an aspect, provided herein is a compound of formula I or a pharmaceutically acceptable salt thereof. Such compounds can inhibit the activity of CDKs, including CDK2, thereby effecting biological functions. In some embodiments, the invention provides compounds that are selective for CDK2.
In an aspect, the disclosure also provides pharmaceutical compositions and medicaments, comprising the compounds or salts of the invention.
In an aspect, provided herein is a process for preparing a pharmaceutical composition comprising mixing pharmaceutically acceptable excipients with a therapeutically effective amount of a compound with formula I or a pharmaceutically acceptable salt thereof.
In an aspect, provided herein is a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof for use in the prevention or treatment of cancer.
In an aspect, provided herein is a method of treating or preventing cancer, comprising administering a therapeutically effective amount a compound with formula I or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof, to a subject in need.
In an aspect, the disclosure also provides a use of a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof in the manufacture of a medicament for use in the treatment of cancer.
In an aspect, the disclosure also provides a use of a compound with formulaⅡas intermediate in the synthesis of a compound with formula I or a pharmaceutically acceptable salt thereof.
Compounds
In one aspect, the present invention provides compounds of formula I or a pharmaceutically acceptable salt thereof. Such compounds can inhibit the activity of CDKs, including CDK2. In some embodiments, the invention provides compounds that are selective for CDK2.
In an embodiment, provided herein is a compound of formula I:
or a pharmaceutically acceptable salt thereof, wherein,
L1 is a saturated or unsaturated C1-9 aliphatic chain optionally substituted with 1-9 R1, optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;
each R1 is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, NH-cycloalkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R1 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-3 heteroatom is independently selected from N, O, S; optionally each R1 is further substituted with cycloalkyl, heterocycloalkyl, optionally halo substituted aryl, heteroaryl;
L2 is absent or is independently selected from group consisting of OH, saturated or unsaturated C1-5 aliphatic chain optionally substituted with 1-5 R2, optionally 1-3 carbon
atoms on the aliphatic chain are independently replaced with N, O, S;
each R2 is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R2 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S;
Ring A is absent or is selected from group consisting of optionally substituted 3-10 membered cycloalkyl, 3-10 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S;
optionally 1-5 substituted group R3 on Ring A is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally, any two R3 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S.
In some embodiment, the compound of formula I or a pharmaceutically acceptable salt, wherein:
L1 is a saturated or unsaturated C3-9 aliphatic chain optionally substituted with 1-6 R1, optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;
preferably, L1 is selected from group consisting of optionally 1-6 R1 substituted C3-9 alkylene, C3-9 heteroalkylene, C3-9 alkenylene, C3-9 heteroalkenylene, C3-9 alkynylene, C3-9 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O, S;
more preferably, L1 is selected from group consisting of optionally 1-4 R1 substituted C4-6 alkylene, C4-6 heteroalkylene, C4-6 alkenylene, C4-6 heteroalkenylene, C4-6 alkynylene, C4-6 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O.
In some embodiment, the compound of formula I or a pharmaceutically acceptable salt, wherein:
each R1 is independently selected from group consisting of H, D, OH, halo, =O, C1-3 alkyl, C1-3 haloalkyl, C1-3 alkoxy, C1-3 alkene, NH2, NH-C1-3alkyl, NH-C1-3cycloalkyl, N- (C1-3alkyl) 2, NHS(O) 2-C1-3alkyl, SO (=NH) –C1-3alkyl, C (O) N- (C1-3alkyl) 2, SO2-C1-3alkyl, SO2N-C1-3alkyl. In some embodiment, the compound of formula I or a pharmaceutically acceptable salt, wherein:
L2 is saturated or unsaturated C1-5 aliphatic chain optionally substituted with 1-5 R2, optionally 1-3 carbon atoms on the aliphatic chain are independently replaced with O, N; each R2 is independently selected from group consisting of H, D, OH, halo, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R2 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl.
In some embodiment, the compound of formula I or a pharmaceutically acceptable salt, wherein:
Ring A is selected from group consisting of optionally substituted 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N;
optionally 1-5 substituted group R3 on Ring A is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl.
In some embodiment, the compound of formula I or a pharmaceutically acceptable salt, wherein the compound is selected from:
or a pharmaceutically acceptable salt thereof.
The compounds disclosed herein may exist as tautomers and optical isomers (e.g., enantiomers, diastereomers, diastereomeric mixtures, racemic mixtures, and the like) .
Compounds provided herein can also include all isotopes of atoms occurring in the intermediates or final compounds. Isotopes include those atoms having the same atomic number but different mass numbers. For example, isotopes of hydrogen include tritium and deuterium. One or more constituent atoms of the compounds of the invention can be replaced or substituted with isotopes of the atoms in natural or non-natural abundance. In some embodiments, the compound includes at least one deuterium atom. For example, one or more
hydrogen atoms in a compound of the present disclosure can be replaced or substituted by deuterium. In some embodiments, the compound includes two or more deuterium atoms. In some embodiments, the compound includes 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 or 12 deuterium atoms. Synthetic methods for including isotopes into organic compounds are known in the art (Deuterium Labeling in Organic Chemistry by Alan F. Thomas (New York, N. Y., Appleton-Century-Crofts, 1971; The Renaissance of H/D Exchange by Jens Atzrodt, Volker Derdau, Thorsten Fey and Jochen Zimmermann, Angew. Chem. Int. Ed. 2007, 7744-7765; The Organic Chemistry of Isotopic Labelling by James R. Hanson, Royal Society of Chemistry, 2011) . Isotopically labeled compounds can be used in various studies such as NMR spectroscopy, metabolism experiments, and/or assays.
In the compounds provided herein, any atom not specifically designated as a particular isotope is meant to represent any stable isotope of that atom. Unless otherwise stated, when a position is designated specifically as “H” or “hydrogen, ” the position is understood to have hydrogen at its natural abundance isotopic composition. Also, unless otherwise stated, when a position is designated specifically as “D” or “deuterium” , the position is understood to have deuterium at an abundance that is at least 3000 times greater than the natural abundance of deuterium, which is 0.015% (i.e., at least 45%incorporation of deuterium) .
Pharmaceutical Composition
In an aspect, provided herein is a pharmaceutical composition comprising a compound with formula I or a pharmaceutically acceptable salt thereof and pharmaceutical excipients.
In an aspect, provided herein is a process for preparing a pharmaceutical composition comprising mixing pharmaceutically acceptable excipients with a therapeutically effective amount of a compound with formula I or a pharmaceutically acceptable salt thereof.
In some embodiment, the term “composition” or “pharmaceutical composition” refers to a mixture of at least one compound useful within the disclosure with a pharmaceutically acceptable carrier. The pharmaceutical composition facilitates administration of the compound to a patient or subject. Multiple techniques of administering a compound exist in the art including, but not limited to, intravenous, oral, aerosol, parenteral, ophthalmic,
pulmonary, and topical administration.
In some embodiment, the term “pharmaceutically acceptable carrier” means a pharmaceutically acceptable material, composition or carrier, such as a liquid or solid filler, stabilizer, dispersing agent, suspending agent, diluent, excipient, thickening agent, solvent or encapsulating material, involved in carrying or transporting a compound useful within the disclosure within or to the patient such that it may perform its intended function.
Methods of Treatment
In an aspect, provided herein is a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof for use in the prevention or treatment of cancer.
In an aspect, provided herein is a method of treating or preventing cancer, comprising administering a therapeutically effective amount a compound with formula I or a pharmaceutically acceptable salt thereof, or a pharmaceutical composition thereof, to a subject in need.
The disclosure also provides a use of a compound with formula I or a pharmaceutically acceptable salt thereof or a pharmaceutical composition thereof in the manufacture of a medicament for use in the treatment of cancer.
In some embodiment, the cancer is breast cancer, ovarian cancer, bladder cancer, uterine cancer, prostate cancer, lung cancer (including NSCLC, SCLC, squamous cell carcinoma or adenocarcinoma) , esophageal cancer, head and neck cancer, colorectal cancer, kidney cancer (including RCC) , liver cancer (including HCC) , pancreatic cancer, stomach (including gastric) cancer and/or thyroid cancer.
In some embodiment, the breast cancer is selected from ER-positive/HR-positive, HER2-negative breast cancer, ER-positive/HR-positive, HER2-positive breast cancer, triple negative breast cancer (TNBC) , and inflammatory breast cancer.
In some embodiment, the breast cancer is selected from endocrine resistant breast cancer, trastuzumab resistant breast cancer, or breast cancer demonstrating primary or acquired resistance to CDK4/CDK6 inhibition.
In some embodiment, the cancer is advanced or metastatic cancer.
In some embodiment, the cancer is characterized by an amplification or overexpression of cyclin E1 and/or cyclin E2.
Intermediate and the use thereof
In an aspect, provided herein is a compound with formulaⅡas an intermediate.
In some embodiment, the compound with formulaⅡis used as an intermediate in the synthesis of a compound with formula I or a pharmaceutically acceptable salt thereof.
General definition
Listed below are definitions of various terms used to describe the compounds and compositions disclosed herein. These definitions apply to the terms as they are used throughout this specification and claims, unless otherwise limited in specific instances, either individually or as part of a larger group.
Unless defined otherwise, all technical and scientific terms used herein generally have the same meaning as commonly understood by one of ordinary skill in the art. Generally, the nomenclature used herein and the laboratory procedures in cell culture, molecular genetics, organic chemistry, and peptide chemistry are those well-known and commonly employed in the art.
As used herein, the term “alkyl, ” by itself or as part of another substituent means, unless otherwise stated, a straight or branched chain hydrocarbon having the number of carbon atoms designated (i.e., C1-C6 alkyl means an alkyl having one to six carbon atoms) and includes straight and branched chains. Examples include methyl, ethyl, propyl, isopropyl, butyl, isobutyl, tert butyl, pentyl, neopentyl, and hexyl. Other examples of C1-C6 alkyl include ethyl, methyl, isopropyl, isobutyl, n-pentyl, and n-hexyl.
As used herein, the term “aliphatic chain” refers to organic chain containing at least two carbon atoms, which is including but not limited to alkylene, heteroalkylene, alkenylene, heteroalkenylene and heteroalkynylene.
Alkene, as used herein, the term “alkene” or “alkenyl” refers to a monovalent group derived from a hydrocarbon moiety containing, in certain embodiments, from two to six, or two to eight carbon atoms having at least one carbon-carbon double bond. The alkenyl group may or may not be the point of attachment to another group. The term “alkenyl” includes, but is not limited to, ethenyl, 1-propenyl, 1-butenyl, heptenyl, octenyl and the like.
As used herein, the term “aryl” refers to an aromatic ring system having any suitable number of ring atoms and any suitable number of rings. Aryl groups can include any suitable number of ring atoms, such as, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 or 16 ring atoms, as well as from 6 to 10, 6 to 12, or 6 to 14 ring members. Aryl groups can be monocyclic, fused to form bicyclic or tricyclic groups, or linked by a bond to form a biaryl group. Representative aryl groups include phenyl, naphthyl and biphenyl. Other aryl groups include benzyl, having a methylene linking group. Some aryl groups have from 6 to 12 ring members, such as phenyl, naphthyl or biphenyl. Other aryl groups have from 6 to 10 ring members, such as phenyl or naphthyl. Some other aryl groups have 6 ring members, such as phenyl. Aryl groups can be substituted or unsubstituted.
As used herein, the term “alkylene” refers to a straight or branched, saturated, aliphatic radical having the number of carbon atoms indicated (i.e., C1-6 means one to six carbons) , and linking at least two other groups, i.e., a divalent hydrocarbon radical. The two moieties linked to the
alkylene can be linked to the same atom or different atoms of the alkylene group. For instance, a straight chain alkylene can be the bivalent radical of - (CH2) n-, where n is 1, 2, 3, 4, 5 or 6. Representative alkylene groups include, but are not limited to, methylene, ethylene, propylene, isopropylene, butylene, isobutylene, sec-butylene, pentylene and hexylene.
The term “alkenylene” , as used herein, refers to a bivalent straight or branched hydrocarbon chain radical consisting solely of carbon and hydrogen atoms and containing at least one double bond. The term “C3-C9alkenylene” , as used herein, refers to a bivalent straight or branched hydrocarbon chain radical group consisting solely of carbon and hydrogen atoms, containing at least one double bond, and having from three to nine carbon atoms. Non-limiting examples of "C3-C9alkenylene" groups include prop-1-enylene (a C3alkenylene) , but-1-enylene (a C4alkenylene) , pent-1-enylene (a C5alkenylene) , pent-4-enylene (a C5alkenylene) , penta-1, 4-dienylene (a C5alkenylene) , hexa-1-enylene (a C6alkenylene) , hexa-2-enylene (a C6alkenylene) , hexa-3-enylene (a C6alkenylene) , hexa-1-, 4-dienylene (a C6alkenylene) , hexa-1-, 5-dienylene (a C6alkenylene) and hexa-2-, 4-dienylene (a C6alkenylene) .
The term "cycloalkylene" refers to a cycloalkyl, as defined herein, having two monovalent radical centers derived by the removal of two hydrogen atoms from the same or two different carbon atoms of a parent cycloalkyl. Examples of cycloalkylene include, but are not limited to, cyclopropylene, cyclobutylene, cyclopentylene and cyclohexylene. Cycloalkylenes of the present disclosure include monocyclic, bicylic and tricyclic ring structures.
As used herein, the term “halo” or “halogen” alone or as part of another substituent means, unless otherwise stated, a fluorine, chlorine, bromine, or iodine atom, preferably, fluorine, chlorine, or bromine, more preferably, fluorine or chlorine.
As used herein, the term “cycloalkyl” means a non-aromatic carbocyclic system that is fully saturated having 1, 2 or 3 rings wherein such rings may be fused. The term “fused” means that a second ring is present (i.e., attached or formed) by having two adjacent atoms in common (i.e., shared) with the first ring. Cycloalkyl also includes bicyclic structures that may
be bridged or spirocyclic in nature with each individual ring within the bicycle varying from 3-8 atoms. The term “cycloalkyl” includes, but is not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, bicyclo [3.1.0] hexyl, spiro [3.3] heptanyl, and bicyclo [1.1.1] pentyl.
As used herein, the term “haloalkyl” refers to an alkyl group, as defined above, substituted with one or more halo substituents, wherein alkyl and halo are as defined herein. Haloalkyl includes, by way of example, chloromethyl, trifluoromethyl, bromoethyl, chlorofluoroethyl, and the like.
As used herein, the term “heterocyclyl” or “heterocycloalkyl” means a non-aromatic carbocyclic system containing 1, 2, 3, 4 heteroatoms selected independently from N, O or S and having 1, 2 or 3 rings wherein such rings may be fused, wherein fused is defined above. Heterocyclyl also includes bicyclic structures that may be Bridged-ring or Spiro-ring in nature with each individual ring within the bicycle varying from 3-8 atoms, and containing 0, 1, 2, 3 or 4 N, atoms. The term “heterocyclyl” includes cyclic esters (i.e., lactones) and cyclic amides (i.e., lactams) and also specifically includes, but is not limited to, epoxidyl, oxetanyl, tetrahydrofuranyl, tetrahydropyranyl (i.e., oxanyl) , pyranyl, dioxanyl, aziridinyl, azetidinyl, pyrrolidinyl, 2, 5-dihydro-1H-pyrrolyl, oxazolidinyl, thiazolidinyl, piperidinyl, morpholinyl, piperazinyl, thiomorpholinyl, 1, 3-oxazinanyl, 1, 3-thiazinanyl, 2-azabicyclo- [2.1.1] hexanyl, 5-azabicyclo [2.1.1] hexanyl, 6-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [2.2.1] -heptanyl, 3-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [3.1.1] heptanyl, 3-azabicyclo [3.1.0] -hexanyl, 2-azabicyclo [3.1.0] hexanyl, 3-azabicyclo [3.2.1] octanyl, 8-azabicyclo [3.2.1] octanyl, 3-oxa-7-azabicyclo [3.3.1] nonanyl, 3-oxa-9-azabicyclo [3.3.1] nonanyl, 2-oxa-5-azabicyclo- [2.2.1] heptanyl, 6-oxa-3-azabicyclo [3.1.1] heptanyl, 2-azaspiro [3.3] heptanyl, 2-oxa-6-azaspiro [3.3] heptanyl, 2-oxaspiro [3.3] heptanyl, 2-oxaspiro [3.5] nonanyl, 3-oxaspiro [5.3] nonanyl, and 8-oxabicyclo [3.2.1] octanyl. The 1, 2, 3 or 4 heteroatoms on ring A is N, specifically includes, but is not limited to, aziridinyl, azetidinyl, pyrrolidinyl, 2, 5-dihydro-1H-pyrrolyl, piperidinyl, piperazinyl, 2-azabicyclo- [2.1.1] hexanyl, 5-azabicyclo [2.1.1] hexanyl, 6-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [2.2.1] -heptanyl, 3-azabicyclo [3.1.1] heptanyl, 2-azabicyclo [3.1.1] heptanyl,
3-azabicyclo [3.1.0] -hexanyl, 2-azabicyclo [3.1.0] hexanyl, 3-azabicyclo [3.2.1] octanyl, 8-azabicyclo [3.2.1] octanyl, triazolyl, tetrazolyl.
As used herein, the term "heteroaryl" as used herein, refers any mono-or bi-cyclic group composed of from 5 to 10 ring members, having at least one aromatic moiety and containing from 1 to 4 hetero atoms selected from oxygen, sulphur and nitrogen (including quaternary nitrogens) .
As used herein, the term “substituted” means that an atom or group of atoms has replaced hydrogen as the substituent attached to another group.
As used herein, the term “optionally substituted” means that the referenced group may be substituted or unsubstituted. In one embodiment, the referenced group is optionally substituted with zero substituents, i.e., the referenced group is unsubstituted. In another embodiment, the referenced group is optionally substituted with one or more additional group (s) individually and independently selected from groups described herein.
As used herein, the articles “a” and “an” refer to one or to more than one (i.e., to at least one) of the grammatical object of the article. By way of example, “an element” means one element or more than one element. Furthermore, use of the term “including” as well as other forms, such as “include, ” “includes, ” and “included, ” is not limiting.
The term “administration” or the like as used herein refers to the providing a therapeutic agent to a subject. Multiple techniques of administering a therapeutic agent exist in the art including, but not limited to, intravenous, oral, aerosol, parenteral, ophthalmic, pulmonary, and topical administration.
The term “treat, ” “treated, ” “treating, ” or “treatment” includes the diminishment or alleviation of at least one symptom associated or caused by the state, disorder or disease being treated.
As used herein, the term “prevent” or “prevention” means no disorder or disease development if none had occurred, or no further disorder or disease development if there had already been
development of the disorder or disease. Also considered is the ability of one to prevent some or all of the symptoms associated with the disorder or disease.
As used herein, the term “patient, ” “individual, ” or “subject” refers to a human or a non-human mammal. Non-human mammals include, for example, livestock and pets, such as ovine, bovine, porcine, canine, feline, and marine mammals. Preferably, the patient, subject, or individual is human.
As used herein, the terms “effective amount, ” “pharmaceutically effective amount, ” and “therapeutically effective amount” refer to a nontoxic but sufficient amount of an agent to provide the desired biological result. That result may be reduction or alleviation of the signs, symptoms, or causes of a disease, or any other desired alteration of a biological system. An appropriate therapeutic amount in any individual case may be determined by one of ordinary skill in the art using routine experimentation.
As used herein, the term “pharmaceutically acceptable” refers to a material, such as a carrier or diluent, which does not abrogate the biological activity or properties of the compound, and is relatively non-toxic, i.e., the material may be administered to an individual without causing undesirable biological effects or interacting in a deleterious manner with any of the components of the composition in which it is contained.
As used herein, the term “pharmaceutically acceptable salt” refers to derivatives of the disclosed compounds wherein the parent compound is modified by converting an existing acid or base moiety to its salt form. Examples of pharmaceutically acceptable salts include, but are not limited to, mineral or organic acid salts of basic residues such as formate.
EXAMPLES
The application is further illustrated by the following examples, which should not be construed as further limiting. The practice of the present disclosure will employ, unless otherwise indicated, conventional techniques of organic synthesis, cell biology, cell culture, and molecular biology, which are within the skill of the art.
Abbreviations
Synthesis Examples
Synthesis of Int 1: benzyl (1- (tert-butyl) -3- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-5-yl) carbamate
Prepared Int-1 by the synthetic procedures described in step1 to step7. The crude Int-1 was purified by column chromatography (SiO2, PE/EtOAc=1/0 to 1/1) to give the benzyl (1- (tert-butyl) -3- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-5-yl) ca rbamate (1.1 g, 84%yield) . LCMS calc. for C27H31N4O7 [M+H] +: m/z = 523.2; Found: 523.6. 1H NMR (400 MHz, DMSO-d6) δ = 9.11 (br s, 1H) , 8.30 (d, J=10.4 Hz, 2H) , 7.56 (d, J=10.4 Hz, 2H) , 7.47-7.20 (m, 5H) , 5.98 (s, 1H) , 5.23-5.15 (m, 1H) , 5.13 (s, 2H) , 3.11-2.97 (m, 1H) , 2.05-1.93 (m, 4H) , 1.90-1.80 (m, 1H) , 1.80-1.68 (m, 1H) , 1.49 (s, 9H)
Example 1
(11S, 13R, Z) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclot ridecaphane-4, 12-dione (Compound 1)
Step 1: ethyl 1- (5- ( (tert-butoxycarbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
To a solution of tert-butyl (5-hydroxypentyl) carbamate (500 mg, 2.46 mmol) in THF (10 mL) was added ethyl 1H-pyrazole-5-carboxylate (413.64 mg, 2.95 mmol) , PPh3 (967.75 mg, 3.69 mmol) . The mixture was stirred at 0 ℃, then the DIAD (746.04 mg, 3.69 mmol) was added to the mixture. The mixture was stirred at 25 ℃ for 3h. The mixture was partitioned between EtOAc (10 mL) and water (10 mL) . The organic layer was washed by brine, dried over Na2SO4, concentrated and purified by flash column (EtOAc in PE, from 0%to 30%) to give ethyl 1- (5- ( (tert-butoxycarbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (700 mg, 87%yield) . LCMS calc. for C16H28N3O4 [M+H] +: m/z = 326.4; Found: 326.5.
Step2: ethyl 1- (5-aminopentyl) -1H-pyrazole-5-carboxylate
A mixture of ethyl 1- (5- ( (tert-butoxycarbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (700 mg, 2.15mmol) in 4 M HCl-dioxane (5 mL) was stirred at 25 ℃ for 3h. Then the solvent was removed to give ethyl 1- (5-aminopentyl) -1H-pyrazole-5-carboxylate (500 mg, crude) as yellow gum. LCMS calc. for C11H20N3O2 [M+H] +: m/z = 226.3; Found: 226.5.
Step3: ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
To a solution of ethyl 1- (5-aminopentyl) -1H-pyrazole-5-carboxylate (500 mg, 2.22mmol) in DCE (10 mL) was added benzyl (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) ca rbamate (1275.70 mg, 2.44 mmol) and DIPEA (860.57 mg, 6.66 mmol) . The mixture was stirred at 60 ℃ for 3 h. The mixture was partitioned between EtOAc (10 mL) and water (10 mL) . The organic layer was washed by brine, dried over Na2SO4, concentrated and purified by flash column (EtOAc in PE, from 10%to 90%) to give ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (660 mg, 48.9%yield) . LCMS
calc. for C32H45N6O6 [M+H] +: m/z = 609.7; Found: 609.8.
Step4: ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate
To a solution of ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (660 mg , 1.08 mmol) in EtOAc (6 mL) and THF (2 mL) was added wet Pd/C (345.17 mg, 3.25 mmol) . The mixture was stirred at 25 ℃ for 16 h under H2. Then the mixture was filtered by Celite, and the organic layer was concentrated to give ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (550 mg, crude) . LCMS calc. for C24H39N6O4 [M+H] +: m/z = 475.6; Found: 475.9.
Step5: 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylic acid
To a solution of ethyl 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylate (550 mg, 1.16 mmol) in EtOH (8 mL) and H2O (2 mL) was added LiOH (30.53 mg, 1.27 mmol) . The mixture was stirred at 25 ℃ for 2 h. The mixture was partitioned between EtOAc (5 mL) and H2O (5 mL) . The aqueous phase was adjusted pH to 5 with 1N HCl, and extracted with EtOAc (10 mL) . The organic layer was dried over Na2SO4 and concentrated to give 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylic acid (440 mg, 85%yield) . LCMS calc. for C22H35N6O4 [M+H] +: m/z = 447.5; Found: 447.5.
Step6: (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclop
entanacyclotridecaphane-4, 12-dione
To a solution of 1- (5- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) pentyl) -1H-pyrazole-5-carboxylic acid (200 mg , 0.45 mmol) in DMF (30 mL) was added DIPEA (173.67 mg, 1.34 mmol) and T3P (855.08 mg , 50%purity, 1.34 mmol) . The mixture was stirred at 50℃ for 16 h. The mixture was partitioned between EtOAc (30 mL) and water (30 mL) . The organic layer was washed by brine, dried over Na2SO4, concentrated and purified by flash column (MeOH in DCM, from 0%to 5%) to give (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacy clotridecaphane-4, 12-dione (100 mg, 52%yield) . LCMS calc. for C22H33N6O3 [M+H] +: m/z = 429.5; Found: 429.7.
Step7: (11S, 13R, Z) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane-4, 12-dione
To a solution of (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacy clotridecaphane-4, 12-dione (100 mg, 0.23 mmol) in HCOOH (2 mL) . The mixture was stirred at 75℃ for 16 h. The solvent was removed and the residue was purified by Prep-HPLC to give (11S, 13R, Z) -21H, 51H-13-oxa-3, 11-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotri decaphane-4, 12-dione (36.2 mg, 40%yield) . LCMS calc. for C18H25N6O3 [M+H] +: m/z = 373.4; Found: 373.5; 1H NMR (400 MHz, DMSO-d6) δ 12.15 (s, 1H) , 10.72-10.60 (m, 1H) , 7.48 (d, J = 2.0 Hz, 1H) , 7.02 (s, 1H) , 6.73-6.37 (m, 2H) , 5.12-4.85 (m, 1H) , 4.69-4.47 (m, 2H) , 3.30-3.22 (m, 1H) , 3.14-2.97 (m, 1H) , 2.93-2.75 (m, 1H) , 2.32-2.07 (m, 2H) , 2.03-1.74 (m, 4H) , 1.64-1.56 (m, 2H) , 1.50-1.09 (m, 4H) .
Example 2
(11S, 13R, Z) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacycl
otetradecaphane-4, 13-dione (Compound 2)
Step 1: ethyl 1- (6- (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
To a solution of tert-butyl (6-hydroxyhexyl) carbamate (2 g, 9.2 mmol ) and ethyl 1H-pyrazole-5-carboxylate (1.2 g, 9.2 mmol) and PPh3 (3.6 g, 13.8 mmol) in dry THF (50 ml) , Then the mixture was added DEAD (2.4 g, 13.8 mmol) slowly at 0℃ under nitrogen atmosphere. The reaction solution was stirred at room temperature for 4 h. The reaction solution was extracted with EtOAc (50 mL) for three times, dried with Na2SO4 and concentrated, and purified by chromatography on silica gel with elution (PE/EtOAc, 45%EtOAc) to obtain ethyl 1- (6- ( (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (1.9 g, 61%yield) . LCMS calc. for C17H30N3O4 [M+H] +: m/z =340.2; Found: 340.3.
Step 2: ethyl 1- (6-aminohexyl) -1H-pyrazole-5-carboxylate
A mixture of ethyl 1- (6- (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (1.9 g, 5.6 mmol) in HCl /1.4-dioxane (4N, 20 mL) , was stirred at room temperature for 1 h. The reaction solution was adjusted to pH=8 with 1 N NaOH solution and extracted with EtOAc (50 mL) for three times, dried with Na2SO4 and concentrated to obtain ethyl 1- (6-aminohexyl) -1H-pyrazole-5-carboxylate (1.3 g, 97%yield) as a white solid. LCMS calc. for C12H22N3O2 [M+H] +: m/z =240.2; Found: 240.2.
Step 3: ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
To a solution of ethyl 1- (6-aminohexyl) -1H-pyrazole-5-carboxylate (1.3 g, 5.4 mmol) and
benzyl (1- (tert-butyl) -5- ( (1S, 3R) -3- (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamate (2.8 g, 5.4 mmol) in dry DCE (20 mL) was added DIPEA (2.1 g, 16.2 mmol) . Then the reaction solution was stirred at 60 ℃ for 8 h. The reaction solution was poured into H2O, and extracted with EtOAc (50 mL) for three times, dried and concentrated to give the crude product. The crude was purified by column chromatography (PE/EtOAc, 30%EtOAc) to obtain ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (630 mg, yield: 19%) as a yellow solid. LCMS calc. for C33H47N6O6 [M+H] +: m/z =623.4; Found: 623.2.
Step 4: ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
To a solution of ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (630 mg, 1.1 mmol) in dry THF (15 mL) was added Pd/C (179 mg, 2.02 mmol) . The reaction solution was stirred at room temperature for 4 h under H2 atmosphere. The reaction solution was filtered and filtrate was concentrated to obtain ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (420 mg, 85%yield) . LCMS calc. for C25H41N6O4 [M+H] + m/z =489.3; Found: 489.1
Step 5: 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylic acid
To a solution of ethyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (420 mg, 0.85 mmol) in THF/H2O (5 mL/1 mL) was added LiOH (140 mg , 3.43 mmol) . The reaction solution stirred at room temperature for 2 h. The reaction solution was adjusted to pH=4 and extracted with EtOAc (50 mL) for three times, dried and concentrated to obtain 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylic acid (300 mg, 76%yield) . LCMS calc. for C23H37N6O4
[M+H] + m/z =461.3; Found: 461.1
Step 6: (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
To a solution of 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -1H-pyrazole-5-carboxylic acid (280 mg, 0.6 mmol ) and T3P (580 mg, 1.8 mmol) in dry DMF (4 mL) was added DIPEA (235 mg, 1.8 mmol) . Then the mixture was stirred at 60 ℃for 8 h. The reaction solution was extracted with EtOAc (20 mLx3) for three times, dried and concentrated to give the crude which was further purified by TLC to obtain (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclop entanacyclotetradecaphane-4, 13-dione (100 mg, 61%yield) . LCMS calc. for C23H35N6O3 [M+H] +: m/z =443.3; Found: 443.4
Step 7: (11S, 13R, Z) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
A solution of (11S, 13R, Z) -21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclop entanacyclotetradecaphane-4, 13-dione (95 mg, 0.2 mmol) in HCOOH (2 mL) . The mixture was stirred at 75 ℃ for 2 h. The reaction solution was concentrated, and purified by pre-HPLC to obtain (11S, 13R, Z) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotet radecaphane-4, 13-dione (3.4 mg, 3.6%yield) . LCMS calc. for C19H27N6O3 [M+H] +: m/z =387.2; Found: 387.2. 1H NMR (400 MHz, Chloroform) δ 10.93 (s, 1H) , 7.52 (d, J = 4.0 Hz, 1H) , 7.28-7.26 (m, 1H) , 7.22-7.20 (m, 1H) , 5.12-4.85 (m, 1H) , 4.85-4.78 (m, 2H) , 3.65-3.55 (m, 1H) , 3.50-3.31 (m, 2H) , 3.20-3.09 (m, 1H) , 2.41-2.21 (m, 2H) , 2.13-1.84 (m, 9H) , 1.42-1.30 (m, 4H) .
Example 3
(11S, 13R, Z) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclododecaphane-4, 11-dione (Compound 4)
Step 1: ethyl 1- (2-azidoethyl) -1H-pyrazole-5-carboxylate
To a mixture of ethyl 1H-pyrazole-5-carboxylate (5.0 g, 35.68 mmol) and triphenylphosphine (14.04 g, 53.52 mmol) in THF (30 mL) , DIAD (10.82 g, 53.52 mmol) was added at 0 ℃. The mixture was stirred at 0 ℃ for 0.5 h, 2-azidoethanol (3.11 g, 35.68 mmol) was added dropwise. The mixture was stirred at 25 ℃ for 16 h. The mixture was added water, extracted with EtOAc (50 mL x 3) , and the organic layers were washed with brine, dried over Na2SO4, concentrated under reduced pressure to give the crude, which was purified by chromatography on silica gel with eluted solvent (PE/EtOAc=2: 1) to give ethyl 1- (2-azidoethyl) -1H-pyrazole-5-carboxylate (5.0 g, 60%yield) . LCMS calc. for C8H12N5O2 [M+H] +: m/z =210.1; Found: 210.0
Step 2: ethyl 1- (2- (5- (aminomethyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate
The mixture of ethyl 1- (2-azidoethyl) -1H-pyrazole-5-carboxylate (5.0 g, 23.90 mmol) and prop-2-yn-1-amine (2.63 g, 47.80 mmol) in toluene (10 mL) was stirred at 120℃ for 16 h. The mixture was added water, extracted with EtOAc (50 mL x 3) , and the organic layers were washed with brine, dried over Na2SO4, concentrated under reduced pressure to
give the crude, which was purified by chromatography on silica gel with eluted solvent (PE/EtOAc=1: 1) to give ethyl 1- (2- (5- (aminomethyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate (2.0 g, 25%yield) . LCMS calc. for C11H17N6O2 [M+H] +: m/z =265.1; Found: 265.1
Step 3: ethyl 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate
The mixture of ethyl 1- (2- (5- (aminomethyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylate (181 mg, 0.69 mmol) , DIPEA (133 mg, 1.03 mmol) and benzyl (1- (tert-butyl) -3- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclo-pentyl) -1H-pyrazol-5-yl) carbamate (358 mg, 0.69 mmol) in 1, 2-dichloroethane (5 mL) was stirred at 90℃ for 24 h. The reaction mixture was used for next step without purification. LCMS calc. for C32H42N9O6 [M+H] +: m/z =648.3; Found: 648.3
Step 4: 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid
To a previous step reaction mixture was added water (2 mL) , methanol (4 mL) and NaOH (32.75 mg, 0.82 mmol) . The mixture was stirred at room temperature for 1 h. After the reaction completed, the reaction was neutralized by 1N HCl (aq) for pH<7, extracted with DCM (30 mL×3) , concentrated and purified by chromatography on silica gel with eluted solvent (DCM/MeOH=20: 1) to give 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclo pentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid (189 mg, 42.5%yield) . LCMS calc. for C30H38N9O6 [M+H] +: m/z =620.3; Found: 620.2
Step 5: 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carb
onyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid
To a solution of 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclo pentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid (189 mg, 0.31 mmol) in methanol (5 mL) , was added Pd/C (20 mg) under H2 and stirred at r. t for 3 h. After the reaction completed, the mixture was filtered, and filtrate was concentrated under reduced pressure to give 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) ami no)methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxylic acid (150 mg, crude) . The crude was used for next step without purification. LCMS calc. for C22H32N9O4 [M+H] +: m/z =486.2; Found: 486.1
Step 6: (11S, 13R, Z) -21- (tert-butyl) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclododecaphane-4, 11-dione
The mixture of 1- (2- (5- ( ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) methyl) -1H-1, 2, 3-triazol-1-yl) ethyl) -1H-pyrazole-5-carboxy licacid (130 mg, 0.27mmol) , propyl phosphate tricyclic (170 mg, 0.54 mmol) , DIPEA (104 mg, 0.80 mmol) and DMF (5 mL) was sealed and stirred at 90 ℃ for 3 h. The mixture was extracted with EtOAc (20 mL × 3) , concentrated under reduced pressure to give (11S, 13R, Z) -21- (tert-butyl) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclododecaphane-4, 11-dione (130 mg, crude) . The crude was used directly in the next step without further purification. LCMS calc. for C22H30N9O3 [M+H] +: m/z =468.2; Found: 468.1
Step 7: (11S, 13R, Z) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1(1, 3) -cyclopentanacyclododecaphane-4, 11-dione
The mixture of (11S, 13R, Z) -21- (tert-butyl) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -di pyrazola-1 (1, 3) -cyclopentanacyclododecaphane-4, 11-dione (130 mg, 0.28 mmol) and formic acid (4 mL) was stirred at 90 ℃ for 16 h. Then the reaction mixture was neutralized by
NaHCO3 (aq) for pH>7, extracted with DCM (30 mL × 3) , and concentrated under reduced pressure to give the crude, which was purified by Prep-HPLC to give (11S, 13R, Z) -21H, 51H, 81H-12-oxa-3, 10-diaza-8 (1, 5) -triazola-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -c yclopentanacyclododecaphane-4, 11-dione (16 mg, 14%yield) . LCMS calc. for C18H22N9O3 [M+H] +: m/z =412.2; Found: 412.0
1H-NMR (400 MHz, DMSO-d6) δ 12.13 (s, 1H) , 10.70-10.59 (m, 1H) , 7.57 (s, 1H) , 7.45 (s, 1H) , 7.13-6.96 (m, 2H) , 6.35 (s, 1H) , 5.31-5.11 (m, 1H) , 5.08-4.90 (m, 1H) , 4.80-4.32 (m, 5H) , 2.33-2.13 (m, 2H) , 2.08-1.85 (m, 5H)
Example 4
(1'S, 3'R, Z) -spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione (Compound 3)
Step 1: ethyl 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylate
To a solution of ethyl 1H-pyrazole-5-carboxylate (5 g, 35.7 mmol) , tert-butyl 2-hydroxyacetate (5.6 g, 42.86 mmol) , PPh3 (11.3 g, 42.86 mmol) in THF (100 mL) were cooled to 0 ℃, then DEAD (7.46 g, 42.86 mmol) was added slowly. The reaction was stirred at 25 ℃ for 16 h. The mixture was added water, extracted with DCM (20 mL x 3) and the mixture was washed with brine, dried over Na2SO4, and concentrated under reduced pressure to give the crude, which was purified chromatography silica (PE/EtOAc = 5: 1~3: 1) to give
ethyl 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylate (3.5 g, 38.6%yield) . LCMS calc. for C12H19N2O4 [M+H] +: m/z =255.1; Found: 255.1
Step 2: 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylic acid
To a solution of 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylate (3.5 g, 13.78 mmol) in MeOH (50 mL) was added LiOH (330 mg, 13.78 mmol) . The reaction was stirred at 25 ℃ for 2 h. After the reaction completed, the mixture was concentrated under reduced pressure to give 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylic acid (3.7 g, crude, 100%yield) . LCMS calc. for C10H15N2O4 [M+H] +: m/z =227.1; Found: 227.1
Step 3: tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( (tert-butyldimethylsilyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
To a solution of 1- (2- (tert-butoxy) -2-oxoethyl) -1H-pyrazole-5-carboxylic acid (3.7 crude) in EtOAc (50 mL) was added 1- (tert-butyl) -3- ( (1S, 3R) -3- ( (tert-butyldimethyl silyl) oxy) cyclopentyl) -1H-pyrazol-5-amine (5.59 g, 16.56 mmol) , T3P (5.6 mL, 16.56 mmol) , and DIEA (3.56 g, 27.6 mmol) . The reaction was stirred at 40 ℃ for 16 h. After the reaction completed, the mixture was added water, extracted with DCM (30 mL x3) . The organic layer was washed with brine, dried over Na2SO4, and concentrated under reduced pressure to give the crude, which was purified with chromatography silica gel (PE/EtOAc = 5: 1~3: 1) to give tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( (tert-butyldimethylsilyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (5.4 g, 76.3%yield) . LCMS calc. for C28H48N5O4Si [M+H] +: m/z =546.3; Found: 546.1
Step 4: tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3-hydroxycyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
To a solution of tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( (tert-butyldimethylsilyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (5.4 g, 9.9 mmol) in THF (50 mL) was added TBAF (15 mL) . The reaction was stirred at 25 ℃ for 16 h. After the reaction completed, the mixture was
added water, extracted with DCM (50 mLx3) . The organic layer was washed with brine, dried over Na2SO4, and concentrated under reduced pressure to give the crude, which was purified by chromatography silica gel (PE/EA=3: 1) to give tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3-hydroxycyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyra zol-1-yl) acetate (3.2 g, 74.3%yield) . LCMS calc. for C22H34N5O4 [M+H] +: m/z =432.2; Found: 432.3
Step5: tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
To a tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3-hydroxycyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyra zol-1-yl) acetate (2.2 g, 11.14 mmol) , DMAP (90 mg, 0.742 mmol) , DIEA (1.91 g, 14.84 mmol) and the reaction was stirred at 50 ℃ for 16 h. After the reaction completed, the mixture was added water, extracted with DCM (10 mL x3) . The organic layer was washed with brine, dried over Na2SO4, and purified by chromatography on silica gel with elution (PE: EtOAc=3: 1) to give tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3 -yl) carbamoyl) -1H-pyrazol-1-yl) acetate (2.1 g, 50%yield) . LCMS calc. for C29H37N6O8 [M+H] +: m/z =597.3; Found: 597.1
Step6: tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (1-cyanocyclopropyl) carbamoyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
To a solution of tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3 -yl) carbamoyl) -1H-pyrazol-1-yl) acetate (2.1 g, 3.52 mmol) in CH3CN (30 mL) was added 1-aminocyclopropanecarbonitrile (346.4 mg, 4.2 mmol) , DIEA (908 mg, 7.04 mmol) , and the reaction was stirred at 70 ℃ for 16 h. After the reaction completed, the mixture was added water and extracted with DCM (20 mLx2) . The combined organic layers were washed with brine, dried over Na2SO4, and purified by chromatography on silica gel with elution
(PE: EA=3: 1) to give tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (1-cyanocyclopropyl) carbamoyl) oxy) cyclopentyl) -1H-pyr azol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (740 mg, 39%yield) . LCMS calc. for C27H38N7O5 [M+H] +: m/z 540.3; Found: 540.3
Step7: tert-butyl 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate
To a solution of tert-butyl 2- (5- ( (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (1-cyanocyclopropyl) carbamoyl) oxy) cyclopentyl) -1H-pyr azol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (740 mg, 1.37 mmol) in MeOH (10 mL) was added RannyNi (60 mg) and stirred at 25 ℃ under H2 for 16 h. After the reaction completed, the mixture was filtered, and filtrate was concentrated under reduced pressure to give tert-butyl 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl ) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (680 mg, crude) . LCMS calc. for C27H42N7O5 [M+H] +: m/z 544.3; Found: 544.1
Step8: 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetic acid
To a solution of tert-butyl 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl ) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetate (680 mg, crude) in HCOOH was stirred at 40 ℃ for 2 d. After the reaction completed, the mixture was concentrated under reduced pressure to give 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl ) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetic acid (370 mg, crude) . LCMS calc. for C23H34N7O5 [M+H] +: m/z 488.3; Found: 488.2
Step9: (1'S, 3'R, Z) -1'- (tert-butyl) spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -
dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione
To a solution of 2- (5- ( (5- ( (1S, 3R) -3- ( ( (1- (aminomethyl) cyclopropyl) carbamoyl) oxy) cyclopentyl) -1- (tert-butyl ) -1H-pyrazol-3-yl) carbamoyl) -1H-pyrazol-1-yl) acetic acid (200 mg, 410 μmol) in DMF (10 mL) was added HATU (187 mg, 492 μmol) , DIPEA (106 mg, 820 μmol) ) and the reaction was stirred at 25 ℃ for 16 h. After the reaction completed, the mixture was added water, extracted DCM (10 mLx3) . The organic layer was washed with brine, dried over Na2SO4, and concentrated, and purified by Pre-TLC (DCM: MeOH=10: 1) to give (1'S, 3'R, Z) -1'- (tert-butyl) spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -dipyrazo la-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione (62 mg, crude) as a yellow solid. LCMS calc. for C23H32N7O5 [M+H] +: m/z 470.2; Found: 470.1
Step10:
(1'S, 3'R, Z) -spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione
To a solution of (1'S, 3'R, Z) -1'- (tert-butyl) spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -dipyrazo la-1 (1, 3) -cyclopentanacyclotridecaphane] -4', 7', 12'-trione (62 mg, 0.13 mmol) in HCOOH was stirred at 70 ℃ for 16 h. After the reaction completed, the mixture was purified by Prep-HPLC (Ultimate XB-C18, 50*250 mm, 10 um, elution: A: H2O B: MeCN, B/A=10%-90%in 35mins, Rate: 80ml/min, 214nm &254nm, Column temperature: room temperature) to give (1'S, 3'R, Z) -spiro [cyclopropane-1, 10'-13-oxa-3, 8, 11-triaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyc lopentanacyclotridecaphane] -4', 7', 12'-trione (5.2 mg, 9.2%yield) .
LCMS calc. for C19H24N7O4 [M+H] +: m/z 414.2; Found: 414.1
1H NMR (400 MHz, Methanol-d4) δ 7.52 (d, J = 2.1 Hz, 1H) , 6.95 (s, 1H) , 6.47 (s, 1H) , 5.42-5.36 (m, 1H) , 5.00-4.96 (m, 2H) , 4.94-4.91 (m, 1H) , 4.82-4.76 (m, 2H) , 3.93-3.89 (s, 1H) , 2.29-2.20 (m, 2H) , 2.03-1.89 (m, 4H) , 1.87-1.81 (m, 1H) , 0.99-0.74 (m, 4H) .
Example 5
(11S, 13R, Z) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (Compound 16)
Step 1: methyl 3-bromo-1- (6- ( (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate
To a solution of methyl 5-bromo-2H-pyrazole-3-carboxylate (5 g, 24.4 mmol) in THF (30 mL) was added tert-butyl N- (6-hydroxyhexyl) carbamate (5.56 g, 25.6 mmol) , DIAD (7.4 g , 36.6 mmol ) and PPh3 (9.60 g, 36.6 mmol) . The mixture was stirred at room temperature for 1 h. The mixture was concentrated and purified by flash chromatography to afford methyl 3-bromo-1- (6- ( (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (8.71 g, 88%yield) . LCMS calc. for C16H27BrN3O4 [M+H] +: m/z = 404.1; Found: 404.3
Step 2: methyl 1- (6-aminohexyl) -3-bromo-1H-pyrazole-5-carboxylate
A solution of methyl 3-bromo-1- (6- ( (tert-butoxycarbonyl) amino) hexyl) -1H-pyrazole-5-carboxylate (8.71 g , 21.5 mmol ) in 4 M HCl/Dioxane (20 mL) was stirred at room temperature for 1 h. The mixture was concentrated to afford methyl 1- (6-aminohexyl) -3-bromo-1H-pyrazole-5-carboxylate (7 g, crude) . LCMS calc. for C11H19BrN3O2 [M+H] +: m/z = 304.1; Found: 303.80
Step 3: methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate
To a solution of methyl 1- (6-aminohexyl) -3-bromo-1H-pyrazole-5-carboxylate (7 g, 23 mmol) in DCE (20 mL) was added benzyl (1- (tert-butyl) -5- ( (1S, 3R) -3- ( ( (4-nitrophenoxy) carbonyl) oxy) cyclopentyl) -1H-pyrazol-3-yl) ca rbamate (12.6 g, 24.2 mmol ) and DIPEA (17.9 g , 138 mmol ) . The mixture was stirred at 80 ℃ for 16 h. The mixture was concentrated and diluted with EtOAc (100 mL) . The mixture was washed three times with sat. aq. Na2CO3 (100 mL) . The organic layer was concentrated and purified by flash chromatography to afford methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate (8.6 g, 54.4%) . LCMS calc. for C32H44BrN6O6 [M+H] +: m/z = 687.2; Found: 686.7
Step 4: methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate
To a solution of methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3- ( ( (benzyloxy) carbonyl) amino) -1- (tert-butyl) -1H-pyrazol-5-yl) cyclopent yl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate (8.6 g, 12.5 mmol) in EtOAc (50 mL) /THF (15 mL) was added Pd/C (0.8 g , 7.5 mmol) . The mixture was stirred at room temperature for 1 h. The mixture was filtered and the filtrate was concentrated to purified by flash chromatography to afford methyl methyl 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate (4.1 g, 59%yield) . LCMS calc. for C24H38BrN6O4 [M+H] +: m/z = 553.2; Found: 553.5
Step 5: 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylic acid
To a solution of methyl 1- (6- ( ( ( (3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylate (4.1 g, 7.4 mmol) in EtOH (10 mL) /H2O (2.5 mL) was
added LiOH (0.19 g, 7.8 mmol) . The mixture was stirred at room temperature for 1 h. The mixture was concentrated and diluted with water (50 mL) . The mixture was extracted with EtOAc (30 mLx3) . The organic layers were combined and concentrated to afford 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amino) hexyl) -3-bromo-1H-pyrazole-5-carboxylic acid (3.71g, 93%yield) . LCMS calc. for C23H36BrN6O4 [M+H] +: m/z = 539.2; Found: 538.8
Step 6: (11S, 13R, Z) -53-bromo-21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
To a solution of 1- (6- ( ( ( ( (1R, 3S) -3- (3-amino-1- (tert-butyl) -1H-pyrazol-5-yl) cyclopentyl) oxy) carbonyl) amin o) hexyl) -3-bromo-1H-pyrazole-5-carboxylic acid (3.71 g , 6.88 mmol) in DCM (5mL) was added HATU (3.92g , 10.32 mmol ) and DIPEA (2.67 g , 20.63 mmol) . The mixture was stirred at room temperature for 16 h. The mixture was diluted with DCM (50 mL) and washed sat. aq. NaHCO3 (100 mL) . The organic layer was concentrated to purified by flash chromatography to afford (11S, 13R, Z) -53-bromo-21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyraz ola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (2.1 g, 58.6%) . LCMS calc. for C23H34BrN6O3 [M+H] +: m/z = 521.2; Found: 521.0
Step 7: (11S, 13R, Z) -21- (tert-butyl) -53- ( (E) -styryl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
To a solution of (11S, 13R, Z) -53-bromo-21- (tert-butyl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (150 mg, 0.29 mmol) in Dioxane (2 mL) /H2O (0.5 mL) was added 4, 4, 5, 5-tetramethyl-2- [ (E) -2-phenylethenyl] -1, 3, 2-dioxaborolane (66.2 mg, 0.29 mmol) , PdCl2 (dppf) (21.07 mg, 0.03 mmol) and K2CO3 (119.3 mg, 0.86 mmol) . The mixture was stirred at 110 ℃ for 1 h. The mixture was concentrated to purified by flash chromatography to
afford
(11S, 13R, Z) -21- (tert-butyl) -53- ( (E) -styryl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazol a-1(1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (80 mg, 51%yield) . LCMS calc. for C31H41N6O3 [M+H] +: m/z = 545.3; Found: 545.7
Step 8: (11S, 13R, Z) -21- (tert-butyl) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
To a solution of (11S, 13R, Z) -21- (tert-butyl) -53- ( (E) -styryl) -21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazol a-1(1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (40 mg, 0.07 mmol) in MeOH (5 mL) was added Pd/C (2.3 mg, 0.02 mmol) . The mixture was stirred at room temperature for 3 h. The mixture was filter and concentrated to afford (11S, 13R, Z) -21- (tert-butyl) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1(1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (32 mg, 80%yield) .
LCMS calc. for C31H43N6O3 [M+H] +: m/z = 547.3; Found: 547.2
Step 9: (11S, 13R, Z) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione
A solution of (11S, 13R, Z) -21- (tert-butyl) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazo la-1 (1, 3) -cyclopentanacyclotetradecaphane-4, 13-dione (80 mg, 0.15 mmol) in HCOOH (5 mL) was stirred at 80 ℃ for 16 h. The mixture was concentrated to purified by prep. HPLC to afford (11S, 13R, Z) -53-phenethyl-21H, 51H-14-oxa-3, 12-diaza-2 (5, 3) , 5 (5, 1) -dipyrazola-1 (1, 3) -c yclopentanacyclotetradecaphane-4, 13-dione (12 mg, 17%yield) . LCMS calc. for C27H35N6O3 [M+H] +: m/z = 491.3; Found: 491.4. 1H NMR (400 MHz, DMSO-d6) δ 12.13 (s, 1H) , 10.64 (s, 1H) , 7.31-7.21 (m, 4H) , 7.21-7.14 (m, 1H) , 6.90 (d, J = 34.1 Hz, 1H) , 6.73-6.47 (m, 2H) , 5.01-4.96 (m, 1H) , 4.71-4.35 (m, 2H) , 3.06-2.93 (m, 2H) , 2.91-2.89 (m, 2H) , 2.83-2.81 (m, 2H) , 2.24-2.17 (m, 2H) , 2.02-1.99 (m, 1H) , 1.95-1.77 (m, 3H) , 1.73-1.40 (m, 4H) , 1.30-1.03 (m, 5H) .
Example 6
Compounds 4-15 were synthesized in the similar steps to compounds 1-3 or 16. The data of LCMS and 1H NMR of compound 1-16 are listed in table 1.
TABLE 1
Biological Assays
Example A: CDK1/Cyclin B1 ADP-Glo assay
The purpose of CDK1/Cyclin B1 assay is to evaluate the inhibition of small molecule inhibitors by using a luminescence-based ADP-Glo assay. CDK1/Cyclin B1 catalyzes the production of ADP from ATP with phosphoryl transferring to the substrate Histone H1 protein (SignalChem) . The ADP-Glo assay measures the amount of ADP to reflect the
rate of kinase reaction. Wild-type CDK1 and wild-type Cyclin B1 enzyme complex was purchased from Proqinase. Compounds dilutions were transferred into each well of 384-well assay plates (784075, Greiner) using Echo 550.2.5 μL 2× enzyme was added into assay plate, room temperature for 10 mins. The reaction was started by adding 2.5 μl 2× substrate and ATP mixture. The plate was sealed and room temperature for 2 h. 4 μL ADP-Glo reagents were added, room temperature for 40 mins. 8 μL kinase detection reagents were added, room temperature for 40 mins. The luminescence signal was read on Envision 2104 plate reader. %Inhibition is calculated as follow:
%inhibition =100 - (Signalcmpd -SignalAve_PC) / (SignalAve_VC -SignalAve_PC)
×100.
%inhibition =100 - (Signalcmpd -SignalAve_PC) / (SignalAve_VC -SignalAve_PC)
×100.
Calculate IC50 by fitting %Inhibition values and log of compound concentrations to nonlinear regression (dose response –variable slope) with GraphPad 6.0.
Y=Bottom + (Top-Bottom) / (1+10^ ( (LogIC50-X) *HillSlope) )
Y=Bottom + (Top-Bottom) / (1+10^ ( (LogIC50-X) *HillSlope) )
X represents log of inhibitor concentration; Y represents %Inhibition.
Example B CDK2/Cyclin E1 ADP-Glo assay
The purpose of CDK2/Cyclin E1 assay is to evaluate the inhibition of small molecule inhibitors by using a luminescence-based ADP-Glo assay. CDK2/Cyclin E1 catalyzes the production of ADP from ATP with phosphoryl transferring to the substrate Histone H1 protein (SignalChem) . The ADP-Glo assay measures the amount of ADP to reflect the rate of kinase reaction. Wild-type CDK2 and wild-type Cyclin E enzyme complex was purchased from Proqinase. Compounds dilutions were transferred into each well of 384-well assay plates (784075, Greiner) using Echo 550.2.5 μL 2× enzyme was added into assay plate, room temperature for 10 mins. The reaction was started by adding 2.5 μl 2× substrate and ATP mixture. The plate was sealed and room temperature for 2 h. 4 μL ADP-Glo reagents were added, room temperature for 40 mins. 8 μL kinase detection reagents were added, room temperature for 40 mins. The luminescence signal was read on Envision 2104 plate reader. %Inhibition is calculated as follow:
%inhibition =100 - (Signalcmpd -SignalAve_PC) / (SignalAve_VC -SignalAve_PC)
×100.
%inhibition =100 - (Signalcmpd -SignalAve_PC) / (SignalAve_VC -SignalAve_PC)
×100.
Calculate IC50 by fitting %Inhibition values and log of compound concentrations to nonlinear regression (dose response –variable slope) with GraphPad 6.0.
Y=Bottom + (Top-Bottom) / (1+10^ ( (LogIC50-X) *HillSlope) )
Y=Bottom + (Top-Bottom) / (1+10^ ( (LogIC50-X) *HillSlope) )
X represents log of inhibitor concentration; Y represents %Inhibition.
Example C Cell proliferation assay
The antiproliferation effect was assessed against the human ovarian adenocarcinoma cell lines based on DNA content measurement. The cell line NIH: OVCAR-3 (ATCC, HTB-161) were maintained in RPMI 1640 (Invitrogen, 11875-085) medium supplement with 20% (v/v) fetal bovine serum (BI, 04-002-1A) and 0.01 mg/mL insulin (Merck, 407709) . TOV-21G (ATCC, CRL-11730) were maintained in RPMI 1640 (Invitrogen, 11875-085) medium supplement with 20% (v/v) fetal bovine serum (BI, 04-002-1A) and 0.01 mg/mL insulin (Merck, 407709) . Both cell lines were cultured according to the standard instruction of the American Type Culture Collection. The cell lines were authenticated by short tandem repeat profiling.
In antiproliferation assay, 1800 NIH: OVCAR-3 cells and 1000 TOV-21G cells were seeded in 200 μL media per well in 96-well flat clear bottom, TC-treated plates (Corning, 3903) and allow to recover overnight in culture medium. Compounds were added with increasing concentrations, with DMSO treatment as positive control. After 7 days of treatment, number of living cells were measured by the addition of Cyquant mix reagent (Invitrogen, C35012) , including 23.4 mL PBS, 96 μL Direct nucleic acid stain and 480 μL Direct background suppressor I. Fluorescence was measured on Acumen (TTP Labtech) . The relative viability of each group was presented as the percentage change relative to the positive control group and then fit to a four-parameter logit non-linear curves using the program XLFit (IDBS) .
Results of the CDK2 Biochemical Assay are presented in Table 2. Compounds having an IC50
less than or equal to 50 nM are represented as "A" ; compounds having an IC50 greater than 50 nM but less than or equal to 150 nM are represented as "B” ; compounds having an IC50 greater than 150 nM but less than or equal to 300 nM are represented as "C" ; and compounds having an IC50 greater than 300 nM are represented as "D" .
Results of the CDK2 selectivity against CDK1 are presented in Table 2. Compounds having the selectivity less than or equal to 10-fold are represented as "D" ; Compounds having the selectivity greater than 10-fold but less than 25-fold as "C" ; Compounds having the selectivity greater than 25-fold but less than 100-fold as "B" ; and Compounds having the selectivity greater than 100-fold are represented as "A" .
Results of the Cell Assay are presented in Table 2. Compounds having an IC50 less than or equal to 150 nM are represented as "A" ; compounds having an IC50 greater than 150 nM hut less than or equal to 3 μM are represented as "B" ; compounds having an IC50 greater than 3 μM but less than or equal to 30 μM are represented as "C" ; and compounds having an IC50 greater than 30 μM are represented as "D" .
Table 2. Assay data of compounds 1-16
*N. D means not detected
*N. T means not tested
*N. D means not detected
*N. T means not tested
Claims (16)
- A compound of formula I
or a pharmaceutically acceptable salt thereof, wherein,L1 is a saturated or unsaturated C1-9 aliphatic chain optionally substituted with 1-9 R1, optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;each R1 is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, NH-cycloalkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R1 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-3 heteroatom is independently selected from N, O, S; optionally each R1 is further substituted with cycloalkyl, heterocycloalkyl, optionally halo substituted aryl, heteroaryl;L2 is absent or is independently selected from group consisting of OH, saturated or unsaturated C1-5 aliphatic chain optionally substituted with 1-5 R2, optionally 1-3 carbon atoms on the aliphatic chain are independently replaced with N, O, S;each R2 is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R2 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-3 heteroatom is independently selected from N, O, S;Ring A is absent or is selected from group consisting of optionally substituted 3-10 membered cycloalkyl, 3-10 membered heterocycloalkyl, 6-10 membered aryl or5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S;optionally 1-5 substituted group R3 on Ring A is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C3-8 cycloalkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally, any two R3 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl, 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N, O, S. - A compound according to claim 1, wherein L1 is a saturated or unsaturated C3-9 aliphatic chain optionally substituted with 1-6 R1, optionally 1-6 carbon atoms on the aliphatic chain are independently replaced with N, O, S;preferably, L1 is selected from group consisting of optionally 1-6 R1 substituted C3-9 alkylene, C3-9 heteroalkylene, C3-9 alkenylene, C3-9 heteroalkenylene, C3-9 alkynylene, C3-9 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O, S;more preferably, L1 is selected from group consisting of optionally 1-4 R1 substituted C4-6 alkylene, C4-6 heteroalkylene, C4-6 alkenylene, C4-6 heteroalkenylene, C4-6 alkynylene, C4-6 heteroalkynylene; wherein the 1-6 heteroatom is independently selected from N, O.
- A compound according to claim 1 or 2, whereineach R1 is independently selected from group consisting of H, D, OH, halo, =O, C1-3 alkyl, C1-3 haloalkyl, C1-3 alkoxy, C1-3 alkene, NH2, NH-C1-3alkyl, NH-C1-3cycloalkyl, N- (C1-3alkyl) 2, NHS (O) 2-C1-3alkyl, SO (=NH) –C1-3alkyl, C (O) N- (C1-3alkyl) 2, SO2-C1-3alkyl, SO2N-C1-3alkyl.
- A compound according to any one of claims 1 to 3, whereinL2 is saturated or unsaturated C1-5 aliphatic chain optionally substituted with 1-5 R2, optionally 1-3 carbon atoms on the aliphatic chain are independently replaced with O, N;each R2 is independently selected from group consisting of H, D, OH, halo, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl; optionally any two R2 are attached to form substituted or unsubstituted 3-6 membered cycloalkyl, 3-6 membered heterocycloalkyl.
- A compound according to any one of claims 1 to 4, whereinRing A is selected from group consisting of optionally substituted 6-10 membered aryl or 5-10 membered heteroaryl, wherein the 1-4 heteroatom is independently selected from N;optionally 1-5 substituted group R3 on Ring A is independently selected from group consisting of H, D, OH, halo, NO2, CN, =O, C1-6 alkyl, C1-6 haloalkyl, C1-6 alkoxy, C1-6 alkene, NH2, NH-alkyl, N- (alkyl) 2, NHS (O) 2-alkyl, SO (=NH) –alkyl, C (O) N- (alkyl) 2, SO2-alkyl, SO2N-alkyl.
- A compound according to claim 1, wherein the compound is selected from
or a pharmaceutically acceptable salt thereof. - A pharmaceutical composition comprising a compound according to any one of claims 1 to 6 and pharmaceutical excipients.
- A process for preparing a pharmaceutical composition according to claim 7 comprising mixing pharmaceutically acceptable excipients with a therapeutically effective amount of a compound according to any one of claims 1 to 6.
- A compound according to any one of claims 1 to 6 or a pharmaceutical composition according to claim 7 for use in the prevention or treatment of cancer;or a use of the compound according to any one of claim 1 to 6 or the pharmaceutical composition according to claim 7 in the manufacture of a medicament for use in the treatment of cancer;or a method of treating cancer, comprising administering a therapeutically effective amount of a compound according to any one of claims 1 to 6 or a pharmaceutical composition according to claim 7 to a subject in need thereof.
- The use or the method according to claim 9, wherein the cancer is breast cancer, ovarian cancer, bladder cancer, uterine cancer, prostate cancer, lung cancer (including NSCLC, SCLC, squamous cell carcinoma or adenocarcinoma) , esophageal cancer, head and neck cancer, colorectal cancer, kidney cancer (including RCC) , liver cancer (including HCC) , pancreatic cancer, stomach (including gastric) cancer and/or thyroid cancer.
- The use or the method according to claim 10, wherein the breast cancer is selected from ER-positive/HR-positive, HER2-negative breast cancer, ER-positive/HR-positive, HER2-positive breast cancer, triple negative breast cancer (TNBC) , and inflammatory breast cancer.
- The use or the method according to claim 10, wherein the breast cancer is selected from endocrine resistant breast cancer, trastuzumab resistant breast cancer, or breast cancer demonstrating primary or acquired resistance to CDK4/CDK6 inhibition.
- The use or the method according to claim 10, wherein the cancer is advanced or metastatic cancer.
- The use or the method according to any one of claim 10-13, wherein the cancer is characterized by an amplification or overexpression of cyclin E1 and/or cyclin E2.
- A compound of formula Ⅱ
- Use of a compound of formula Ⅱ as intermediate in the synthesis of a compound according to any one of claim 1-6
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