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CN106928214A - The preparation method of Yi Zhong oxazolidinone compounds and its intermediate - Google Patents

The preparation method of Yi Zhong oxazolidinone compounds and its intermediate Download PDF

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CN106928214A
CN106928214A CN201710227928.7A CN201710227928A CN106928214A CN 106928214 A CN106928214 A CN 106928214A CN 201710227928 A CN201710227928 A CN 201710227928A CN 106928214 A CN106928214 A CN 106928214A
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reaction
formula
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袁建栋
陈耀
杭文明
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XINTAI PHARMACEUTICAL (SUZHOU) CO Ltd
Borui Pharmaceutical (suzhou) Ltd By Share Ltd
Brightgene Bio Medical Technology Co Ltd
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XINTAI PHARMACEUTICAL (SUZHOU) CO Ltd
Borui Pharmaceutical (suzhou) Ltd By Share Ltd
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    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D413/00Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D413/14Heterocyclic compounds containing two or more hetero rings, at least one ring having nitrogen and oxygen atoms as the only ring hetero atoms containing three or more hetero rings
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C213/00Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C213/04Preparation of compounds containing amino and hydroxy, amino and etherified hydroxy or amino and esterified hydroxy groups bound to the same carbon skeleton by reaction of ammonia or amines with olefin oxides or halohydrins
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    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C219/00Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton
    • C07C219/02Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having esterified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton
    • C07C219/04Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having esterified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated
    • C07C219/06Compounds containing amino and esterified hydroxy groups bound to the same carbon skeleton having esterified hydroxy groups and amino groups bound to acyclic carbon atoms of the same carbon skeleton the carbon skeleton being acyclic and saturated having the hydroxy groups esterified by carboxylic acids having the esterifying carboxyl groups bound to hydrogen atoms or to acyclic carbon atoms of an acyclic saturated carbon skeleton
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    • C07F5/00Compounds containing elements of Groups 3 or 13 of the Periodic Table
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    • C07FACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
    • C07F9/00Compounds containing elements of Groups 5 or 15 of the Periodic Table
    • C07F9/02Phosphorus compounds
    • C07F9/547Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom
    • C07F9/6558Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing at least two different or differently substituted hetero rings neither condensed among themselves nor condensed with a common carbocyclic ring or ring system
    • C07F9/65583Heterocyclic compounds, e.g. containing phosphorus as a ring hetero atom containing at least two different or differently substituted hetero rings neither condensed among themselves nor condensed with a common carbocyclic ring or ring system each of the hetero rings containing nitrogen as ring hetero atom
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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    • Y02P20/55Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups

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  • Heterocyclic Carbon Compounds Containing A Hetero Ring Having Nitrogen And Oxygen As The Only Ring Hetero Atoms (AREA)
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Abstract

The present invention relates to Yi Zhong oxazolidinone compounds and its preparation method of intermediate.Specifically, be coupled for two fragments using Suzuki reactions by the present invention, Oxazolidinone derivative is prepared, the method process is simple, the reaction time is short, high income, be adapted to industrialized production.Also, the preparation method of this invention Ti Gong oxazolidinone compounds intermediates has simple to operate, high income, the advantage of low cost.

Description

The preparation method of Yi Zhong oxazolidinone compounds and its intermediate
The present invention is that number of patent application is 201410819173.6, and the applying date is 2014.12.25, entitled " a kind of The divisional application of the preparation method of oxazolidinone compounds and its intermediate ".
Technical field
The present invention relates to pharmaceutical chemistry synthesis field, and in particular to the system of Yi Zhong oxazolidinone compounds and its intermediate Preparation Method.
Background technology
Oxazolidone finds treating and preventing such as bacterium infection and atherosclerosis as a class chemical composition It is widely used in the medicine of medical conditions.The various structures of oxazolidinone derivative are known.Such as US4461773, The monosubstituted or disubstituted derivatives of 3- phenyl -2- oxazolidones are disclosed in US4476136, US4250318 etc..
Safe ground azoles amine (Tedizolid) is a kind of novel oxazolidinone antibiotics, its phosphate (tedizolid Phosphate FDA) has been obtained and has ratified for treating staphylococcus aureus that (including methicillin resistant strains, methicillin is quick Sense bacterial strain) and the gram-positive bacterium such as various streptococcuses and enterococcus faecalis the acute bacterial skin and skin texture that cause Infection (ABSSSI).Safe ground azoles amine structure formula as shown in following formula TD,
Chemical name:(R) -3- (4- (2- (2- methyl tetrazolium -5- bases) pyridine -5- bases) -3- fluorophenyls) -5- Qiang Jia Ji oxazoles Alkane -2- ketone.
Chinese patent CN102516238A and CN102702184A disclose safe ground azoles amine and phosphoric acid safe ground azoles amine is generalized The preparation method of compound, such as reaction equation (1):
The method first replaces the hydrogen atom on the phenyl of Qiang methyl oxazolidinones derivative (II) with halogen atom, and generation is spread out Biological (III);Being subsequently adding palladium catalyst makes derivative (III) replace with hexa methyl ditin or tri-butyl tin hydride, and generation is spread out Biological (IV), the step yield about 61%;3rd step, the pyrrole for making derivative (IV) under the conditions of palladium catalyst and being replaced by bromine or iodine Piperidine derivatives react, and generation has pyridine ring oxazolidinone derivatives (V).The method prepares safe ground azoles amine, it is necessary to use twice To palladium catalyst, and three-step reaction is by (R) -3- (4- tributyl tinbase -3- fluorophenyls) -2- oxo -5- oxazole alkyl first Alcohol is only capable of reaching 26% with 2- (2- methyl tetrazolium -5- bases) -5- bromopyridines reaction generation safe ground azoles amine, yield.Whole piece route into This height, yield is low, is not suitable for industrialized production;On the other hand, this method is related to the route of synthesis that organotin is coupled, and is easily caused The residual of tin in finished product, is not suitable for preparing patent medicine.
US8604209B2 discloses the preparation method of the safe ground azoles amine shown in following reaction equation (2):
Wherein Y is from ZnCl, BF3And BR3R4, wherein R3And R4Independently selected from the OH and C of any substitution1-C6Unitary and Dihydroxylic alcohols, wherein R3And R4Together can be with cyclization.
After compound 1 and compound 2 are first carried out coupling reaction by the method, will obtain compound 3 in the basic conditions with Glycidyl Butyrate reacts, generation safe ground azoles amine (TD).Wherein, the purity of intermediate 3 and yield that prepared by first step reaction are equal Relatively low (HPLC:89.8%, yield:66%);Final step coupling reaction, is caused secondary anti-using highly basic (lithium silicide of hexamethyl two) Ying Duo, introducing impurity is more, and post processing is difficult, cumbersome;The final step reaction time is long, and the safe ground azoles amine for preparing is pure Degree is low, it is necessary to by repeatedly purifying, cumbersome, Pd residual quantities are still higher after purifying;Reaction needs to use anhydrous solvent, Be not suitable for industrialization generation.
Fewer, the existing method of the preparation method document report at present on safe ground azoles amine, complex operation, reaction time Long, production cost is high, and total recovery is low, and purity is relatively low, is not suitable for industrialization generation.
The content of the invention
Simple to operate it is an object of the present invention to provide a kind of low production cost, yield and purity are higher, and the reaction time is short, fit The method for closing the oxazolidinones class compound processed of industrialized production, and in particular to the method for preparing safe ground azoles amine.
To achieve the above object, the present invention provides following technical scheme:
The preparation method of compound shown in a kind of following formula TD
Including by compound shown in following formula I
With compound shown in Formula II
Reaction, compound shown in generation following formula TD-1
Wherein, R is hydrogen or hydroxyl protecting group;L and R1In one be leaving group, another is BF3Or BR2R3, wherein R2 And R3The independent C selected from by OH and any substitution1~C6The group of unitary and dihydroxylic alcohols composition, wherein R2And R3Together can be into Ring;Optional, slough the hydroxyl protecting group R of compound shown in TD-1, compound shown in generation TD.
In one embodiment, preferably L is leaving group, R1It is BF3Or BR2R3, wherein R2And R3It is independent selected from by OH With the C of any substitution1~C6The group of unitary and dihydroxylic alcohols composition, wherein R2And R3Together can be with cyclization.
In another embodiment, preferential L is BF3Or BR2R3, wherein R2And R3It is independent selected from by OH and any substitution C1~C6The group of unitary and dihydroxylic alcohols composition, wherein R2And R3Together can be with cyclization, R1It is leaving group.
Wherein, the leaving group includes halogen such as chlorine, bromine, iodine, sulfonyloxy such as trifluoro-methanesulfonyl oxy, methylsulfonyl oxygen Base, phenylsulfonyloxy, or the phenylsulfonyloxy being substituted by one or more substituents, the substitution base are selected from:Halogen, C1~6Alkane Base and C1~6The group of alkoxy composition;It is preferred that leaving group is chlorine, bromine, iodine;More preferably leaving group is bromine or iodine.
Wherein, the R is hydrogen, or hydroxyl protecting group, the hydroxyl protecting group includes:Alkyl, acyl group, alkyl silyl is excellent The described hydroxyl protecting group of choosing is benzyl, the benzyl being substituted by one or more substituents, C1~4Alkyl acyl, or trimethyl silicane Base, the substitution base is selected from by C1~6Alkyl, C1~6The group of alkoxy and halogen composition.It is further that preferably R is hydrogen, benzyl, To methyl-benzyl, acetyl group, propiono, or bytyry.
Wherein, the BR2R3, preferably B (OH)2Or
In another embodiment, preferably L is bromine or iodine, R1It is BF3、B(OH)2OrFormula TD shownization Shown in the following reaction equation of preparation method of compound:
Compound shown in Formulas I and compound shown in Formula II react, preferably under palladium catalyst catalytic condition, alkalescence (such as carbon Sour sodium, potassium carbonate, NaOH or potassium hydroxide etc.) react under environment, solvent is preferably toluene, THF, DMF, DMSO, dioxy Six rings, isopropanol or ethanol etc., reaction temperature are about 60~80 DEG C, coupling obtain compound TD-1 (R is hydroxyl protecting group) or TD (R is hydrogen);Optional sloughs hydroxyl protecting group R by compound TD-1, obtains compound TD.Wherein intermediate Formula II shownization Compound:
Wherein R1It is BF3、B(OH)2OrCan prepare by the following method:
Intermediate ii, wherein X are chlorine, bromine or iodine, highly basic (such as C with 2 equivalents1~6Lithium alkylide such as n-BuLi or the tert-butyl group Lithium) reaction, it is subsequently adding suitable electrophilic reagent such as B (OR2)3, specifically, such as C1~6(such as boric acid three is different for tri-alkoxy borate Propyl ester), preferred solvent is THF or toluene, and reaction temperature is about -75 DEG C~-65 DEG C.Electrophilic reagent is tri-alkoxy borate When, gained reactant mixture is post-treated to obtain boric acid IIa.The dianion of intermediate ii and ring borate are reacted, and Afterwards can isolated ring borate IIb.Boronic acid compounds IIa can also refer to " the pyrimidine chloro thing of palladium chtalyst and pyridine boron The Suzuki coupling reactions of acid esters " (Xiao Wenjing, 2011- Zhengzhou University:Pharmaceutical chemistry, master thesis) disclosed in method system It is standby to obtain.Or diborate (such as two pinacols of hypoboric acid) is coupled on halogenated hydrocarbons (ii) under palladium catalyst effect, The borate IIb of generation can be hydrolyzed as boric acid IIa in sour water;Trifluoro boronic acid derivatives IIc can be by IIa and KF And/or KHF2Reaction generation;Or trifluoro boronic acid derivatives IIc passes through formula ii with borate (such as triisopropyl borate ester) in alkalescence Under the conditions of (such as n-BuLi) reaction, solvent is preferably THF, generates boric acid triisopropyl lithium salts, then again with KHF2Reaction system Standby to obtain, specific method can be found in " Suzuki-Miyaura idols of the potassium fluoborate of 2- pyridines three and fragrant miscellaneous halides under palladium chtalyst Connection reaction " (appoints big, 2011- Zhengzhou University:Organic chemistry, Master's thesis), the document is incorporated by reference into this patent.
Specifically, the IIa can be prepared by method shown in following reaction equation:
Wherein compound shown in formula (1-4) refers to method disclosed in CN1894242B and prepares, disclosed in the patent Content is incorporated by reference into the present invention.For example, including but is not limited to compound shown in (1-4) in strong basicity (such as normal-butyl Lithium) under the conditions of with boric acid ester compound reaction, prepare compound shown in Formula II a, preferably reaction dissolvent is THF, reaction Temperature is about -70 DEG C~-65 DEG C.
In another embodiment, preferential R1It is bromine or iodine, L is BF3、B(OH)2OrFormula TD shownization The following reaction equation of preparation method of compound:
Compound shown in Formulas I reacts with compound shown in Formula II, is reacted preferably under palladium catalyst catalytic condition, and solvent is excellent Elect DMF as, reaction temperature is about 60~80 DEG C, prepare compound TD-1 (R is hydroxyl protecting group) or TD (R is hydrogen), appoint Choosing, compound TD-1 is sloughed into hydroxyl protecting group R, obtain compound TD.Compound wherein shown in intermediate Formulas I:
Wherein, L is BF3、B(OH)2OrPreparation method and previously described formula II institutes Show that compound works as R1It is borate or BF3When preparation method be similar to, specific reaction equation is as follows:
X is chlorine, bromine or iodine in wherein formula i;The R be hydrogen, benzyl, to methyl-benzyl, acetyl group, propiono, or butyryl Base.Further preferred X is bromine or iodine, and R is hydrogen.
In another embodiment, preferably described L is bromine or iodine, and the R is hydrogen, specifically, formula TD shownization Shown in the following reaction process of preparation method of compound:
The reaction is reacted preferably under palladium catalyst catalytic condition, and solvent is preferably DMF, and reaction temperature is about 60~80 DEG C, preferable reaction temperature is 70 DEG C.
Halogen of the present invention is to include fluorine, chlorine, bromine, iodine;The alkyl includes straight or branched alkyl, and (such as ethyl, different Propyl group etc.), the moieties (such as benzyl) of aryl substitution.
Compound shown in the Formulas I is preferably coupled with compound shown in Formula II a under the catalytic condition of palladium catalyst Reaction, described palladium catalyst can include double (triphenylphosphine) palladiums (II) of dichloro, tetrakis triphenylphosphine palladium (0), palladium carbon, Pd (OAc)2And PCy3/Pd2(dba)3(dba=benzalacetones) etc., the preferably reaction dissolvent are dimethylformamide (DMF), 1-Methyl-2-Pyrrolidone, tetrahydrofuran (THF), toluene, dimethyl sulfoxide, toluene, isopropanol, ethanol etc., temperature is About 60 DEG C~150 DEG C.
When R is hydroxyl protecting group, according to the method for the conventional dehydroxylation protection group in this area, protection group R is sloughed, obtained Compound shown in formula TD.For example, Pb-C/H may be selected when R is benzyl or substituted benzyl2The method of catalytic hydrogenation sloughs protection Base, reaction dissolvent is preferably THF, methyl alcohol, toluene or hexane etc.;When R is alkyl silyl (such as trimethyl silicon substrate), preferably in acid Property under the conditions of in organic solvent (such as HCl-MeOH, HCl- dioxane system, or AcOH-THF systems) slough alkyl silyl guarantor Shield base;When R is alkyl acyl (acetyl group, propiono, bytyry etc.), may be selected to be hydrolyzed under pickling or alkalescence condition Slough, such as under the conditions of sodium methoxide, corresponding alkyl acyl is sloughed as solvent is stirred at room temperature with methyl alcohol.
On the other hand, the invention provides compound shown in Formulas I, preferably L be chlorine, preparation method during bromine or iodine, its by Compound shown in formula III is changed into carbonyl dimidazoles reaction,
The reaction dissolvent is preferably dichloromethane, DMF, and isopropanol or THF etc., reaction temperature are for about 25 DEG C~40 DEG C. After reaction terminates, optional the compound I and hydroxyl protecting group (such as benzyl chloride, diethylaminoethanol, C1 that will be free of protection group ~6 alkyl carboxylic acids, dimethyl tertiary butyl silicon chloride, trimethylsilyl chloride or dimethyl tertiary butyl silicon chloride etc.) reaction, obtain right Answer the compound I that R is hydroxyl protecting group;Wherein preferred R is hydrogen, benzyl, to methyl-benzyl, acetyl group, and propiono, bytyry, Dimethyl tertiary butyl silicon chloride, trimethylsilyl chloride or dimethyl tertiary butyl silicon chloride.
Further, compound shown in formula IV shown in the formula III
With the reaction of glycidol butyl ester, generate, wherein, L is chlorine, bromine or iodine;The reaction is carried out preferably in isopropanol Reaction is back to terminate.
In certain embodiments, the method for the invention also includes, the formula TD prepared using the method for the invention Shown compound, with POCl3、POCl(OBn)2Or P (N-iPr2)(O-tBu)2Compound shown in TD-P is generated at reaction conditions
Further, methods described also includes reacting generation following formula with alkali at reaction conditions using compound shown in TD-P Compound shown in TD-PN
Wherein, M is PO (OH)2Pharmaceutically acceptable salt.The technical staff of medicinal chemistry art is it will be appreciated that term " pharmaceutically acceptable salt " refers to the salt generated with the cation and/or anion of suitable bio-compatible.Described sun from Attached bag includes metallic element cation, such as the quaternary ammonium cation of sodium, lithium, potassium, magnesium, aluminium, calcium, zinc and alkaloid includes metal Thanide cation, such as N, N- dibenzyl-ethylenediamins.Chloroprocanine, choline, diethyl hydramine, ethylenediamine, procaine and N- methyl glucose osamines etc..The anion of the anion including inorganic acid, the inorganic acid such as hydrochloric acid, hydrobromic acid, sulfuric acid, Phosphoric acid, nitric acid, perchloric acid, fumaric acid, acetic acid, propionic acid, succinic acid, glycolic, formic acid, lactic acid, maleic acid, tartaric acid, lemon Lemon acid, palmitic acid, malonic acid, tartronic acid, phenylacetic acid, glutamic acid, benzoic acid salicylic acid, toluenesulfonic acid, malic acid and class Acidoid.It is preferred that described alkali is the alkali containing sodium, preferably described M is PO3Na2
The third aspect, the invention provides following formula: compound
Wherein, L is bromine or iodine.
On the other hand, compound (during R=H) shown in formula i ' of the present invention, can also be by following reaction equation (4) Suo Shi Method is prepared:
Reaction equation (4)
Step 1) the bromo- 3- fluoroanilines of 4- and benzyl chloroformate are reacted under the conditions of alkaline (such as sodium acid carbonate), prepare benzyl Aminocarbamic acid ester type compound (1-7);Step 2) by Benzylcarbamate class compound (1-7) in strong basicity (such as positive fourth Base lithium) under the conditions of with glycidol butyl ester reaction, obtain compound shown in formula (1-9);Finally, the different choice according to X is anti- By compound shown in the conversion accepted way of doing sth of compound shown in formula (1-9) i ' under the conditions of answering.Optional, by compound and hydroxyl shown in formula i ' Protective agent reaction prepares the compound of hydroxyl protection group R.
Specifically, when X is halogen (that is, when preferably L is bromine or iodine), compound shown in formula (1-9) is with halide reagent (such as ICl/CF3COOAg、BrCl/CF3COOAg) react, solvent is preferably acetonitrile, chemical combination shown in formula i ' is reacted under room temperature condition Thing.
Compound i ' it is optional with hydroxy-protecting agent (such as benzyl chloride, diethylaminoethanol, C1~6Alkyl carboxylic acid etc.) it is anti- Should, it is the compound I of hydroxyl protecting group to obtain correspondence R,
On the other hand, halogen X can change into methanesulfonic acid anhydride group by this area conventional method in compound I ', then Compound TD is obtained by coupling reaction with compound IIa again.
In the present invention, described " hydroxy-protecting agent " refer to can with hydroxyl reaction generate esters protection group, silicon ether protection group, The reagent of alkyl ether protection group, for example, the hydroxy-protecting agent of esters protection group can be generated with hydroxyl reaction, including but not limited to, Formic acid, acetic acid, butyric acid, propionic acid etc.;The hydroxy-protecting agent for forming silicon ethers protection group, including but not limited to, trifluoromethyl Silicon substrate, trimethyl silicon substrate, 3,5-dimethylphenyl silicon substrate, dimethyl tertiary butyl silicon substrate etc.;The hydroxyl that alkyl ether can be formed with hydroxyl Base protective agent, including but not limited to, benzyl, to methyl-benzyl etc..
Heretofore described " optional ", refers to that, according to reaction needs, can select yes or no, illustration, this The process of compound I and compound II reaction prepare compounds TD in invention, when R is H, TD-1 is identical with the structure of TD, then TD-1 need not further slough hydroxyl protecting group and prepare TD;When R is benzyl or silicon-based protecting group, compound I and compound II reactions obtain compound TD-1 first, then need selection further to slough hydroxyl protecting group R in TD-1, prepare TD.
The invention provides a kind of new synthetic method of safe ground azoles amine (TD), methods described has compared with prior art Significant technique effect, first, the raw material used in the present invention is easy to get, compound shown in the used Formulas I of the present invention, can be by many The method of kind is prepared, and yield is higher;Compound shown in Formula II used in the present invention, preparation method is simple, easily obtains ;Secondly, compound coupling prepares safe ground azoles amine (compound TD) as shown in compound shown in this Formulas I and Formula II, and yield is notable Improve (being not less than 87%), the reaction time significantly shortens.3rd, the method that the present invention is provided, agents useful for same is easy to get, cost Low, each intermediate of preparation is solid, and post processing is simple.
Specific embodiment
In order that technical problem solved by the invention, technical scheme and beneficial effect become more apparent, below in conjunction with Specific embodiment, the present invention is further illustrated, and given specific embodiment is the preferred embodiments of the present invention.
Embodiment 1:The preparation of compound shown in Formula II a
(1), the preparation of 2- cyano group -5- bromopyridines:
100 grams of 2,5- dibromo pyridines are dissolved in 1 liter of dimethylformamide, at room temperature by 32 grams of copper cyaniders and 17.8 grams Cymag is added in solution, is reacted within 7 hours solution stirring at being 150 DEG C in temperature.After being cooled to room temperature, reaction mixing Water is added in thing, and is extracted with ethyl acetate.Organic layer salt water washing is simultaneously dehydrated, filters and is concentrated in vacuo, and obtains 54 grams of marks Topic compound, yield 70%.
1H-NMR(CDCl3) δ 8.76 (s, 1H), 7.98 (dd, 1H), 7.58 (dd, 1H).
(2), the preparation of 2- (tetrazolium -5- bases) -5- bromopyridines:
10 grams of 2- cyano group -5- bromopyridines are dissolved in 100 milliliters of dimethylformamides, at room temperature by 5.33 grams of Azides Sodium and 4.4 grams of ammonium chlorides are added in solution, and solution is stirred at being 110 DEG C in temperature and reacted for 3 hours.In reactant mixture Water is added, is then extracted with ethyl acetate, separating obtained organic layer salt water washing, be dehydrated, filter and be concentrated in vacuo, thus Obtain 10.5 grams of title compounds, yield 85%.
(3), the preparation of 2- (1- methyl tetrazolium -5- bases) -5- bromopyridines and 2- (2- methyl tetrazolium -5- bases) -5- bromopyridines
10.5 grams of 2- (tetrazolium -5- bases) -5- bromopyridines are dissolved in 100 milliliters of dimethylformamides, then by 6.5 grams of hydrogen Sodium oxide molybdena is added in solution, and 9.3 grams of iodomethanes are slowly added in solution at 0 DEG C.Solution is stirred at room temperature 6 Hour, water is subsequently adding, and be extracted with ethyl acetate.Then organic layer salt water washing, dehydration, filtering, vacuum concentration obtained by And by chromatography over CC, obtain 4 grams of 2- (1- methyl tetrazolium -5- bases) -5- bromopyridines and 5 grams of 2- (2- methyl tetrazolium -5- bases) - 5- bromopyridines.
(4), the preparation of compound shown in Formula II a:
Under nitrogen protection, 240 grams of 2- (2- methyl tetrazolium -5- bases) -5- bromopyridines are dissolved in 2.4 liters of tetrahydrofurans, plus Enter 207g triisopropyl borate esters, -75 DEG C are cooled in liquid nitrogen/ethanol bath, be slowly added dropwise the n-BuLi four of 840ml 2.5M Hydrogen tetrahydrofuran solution, control temperature reacts 2h, HPLC detection reactions, until completely in -75~-65 DEG C below -65 DEG C.It is added dropwise The aqueous ammonium chloride solutions of 1.3L 20%, below 0 DEG C, drop finishes control temperature, stirs 0.5h, stratification, the anhydrous sulphur of organic layer Sour sodium is dried, and draws dry, adds 600ml ethyl acetate mashing 2h, and filtering is dried, and obtains 149.7g target compounds, and yield is 73%.
Embodiment 2:(R) -3- (4- iodo -3- fluorophenyls) -2- oxo -5- oxazoles alkyl methanol (that is, compound i ') Prepare:
(1), the preparation of N- carbobenzyloxies -3- fluoroanilines (1-7):
100 grams of 3- fluoroanilines are dissolved in 1 liter of tetrahydrofuran (THF), and by 150 grams of (1.8 moles) sodium acid carbonates (NaHCO3) be added in the solution, after being cooled to 0 DEG C, 154 milliliters of N- carbobenzoxy chlorides (CbzCl) are slowly added to solution In reacted.Under agitation by reactant mixture at 0 DEG C sustained response 2 hours, extracted with 0.5 liter of ethyl acetate afterwards Reaction system is taken, after separation, organic layer salt water washing, with anhydrous magnesium sulfate (MgSO4) dry and be concentrated in vacuo, residue is used N-hexane is washed twice, and obtains 132 grams of title compounds for white crystal, yield 85%.
(2), the preparation of (R) -3- (3- fluorophenyls) -2- oxos -5- oxazoles alkyl methanol (1-9):
132 grams of N- carbobenzyloxy -3- fluoroanilines are dissolved in 1.3 liters of tetrahydrofurans, and solution is cooled to -78 ℃.370 milliliters of n-BuLis (1.6 mol/Ls, n-hexane) are slowly added in solution in a nitrogen atmosphere, are then stirred 10 minutes.84 milliliters of (R)-(-)-Glycidyl butyrates are slowly added in reactant mixture, are stirred at that same temperature Mix 2 hours, then react 24 hours at room temperature.After the completion of reaction, ammonium chloride solution is added toward solution, and use at room temperature 0.5 liter of ethyl acetate extraction.With the separating obtained organic layer of salt water washing, and dried with anhydrous magnesium sulfate, vacuum concentration.By institute Obtain residue to be dissolved in 100 milliliters of ethyl acetate and washed with n-hexane, obtain white crystal, white crystal purifying is 80 grams Title compound, yield 70%.
1H-NMR(DMSO-d6) δ 7.85 (t, 1H), 7.58 (dd, 1H), 7.23 (dd, 1H), 4.69 (m, 1H), 4.02 (t, 1H), 3.80 (dd, 1H), 3.60 (br dd, 2H).
(3), the system of (R) -3- (4- iodo -3- fluorophenyls) -2- oxo -5- oxazoles alkyl methanol (compound shown in formula i ') It is standby:
30 grams of (R) -3- (3- fluorophenyls) -2- oxo -5- oxazole alkyl methanols are dissolved in 300 milliliters of acetonitriles, and by 46 Gram trifluoroacetic acid silver salt (CF3COOAg) it is added in solution with 43 grams of iodate chlorine, after being stirred at room temperature 1 day, is added toward solution Enter water, and be extracted with ethyl acetate, separating obtained organic layer salt water washing is simultaneously dehydrated.Then by residue filtering, vacuum It is concentrated and dried, thus obtains 44 grams of title compounds, yield 94%.
1H-NMR(DMSO-d6) δ 7.77 (t, 1H), 7.56 (dd, 1H), 7.20 (dd, 1H), 5.20 (m, 1H), 4.70 (m, 1H), 4.07 (t, 1H), 3.80 (m, 1H), 3.67 (m, 2H), 3.56 (m, 3H).
(R) -3- (4- bromo -3- fluorophenyls) -2- oxo -5- oxazoles alkyl methanol (Formulas I ' shown in compound, when L be bromine) Similar (R) -3- (4- iodo -3- the fluorophenyls) -2- oxo -5- oxazole alkyl methanols of preparation method preparation method, difference Place is to replace the iodide (iodate chlorine) in step (3) with the bromide of response.
Embodiment 3:The preparation on safe ground azoles amine (compound shown in TD):
In the there-necked flask of the 500ml of reflux condensing tube and thermometer is configured with, 1.57g Pd (OAc) is added2, 3.7g PPh3150ml DMF are dissolved in, nitrogen is replaced as, 33.75ml triethylamines are subsequently adding, stirring at 70 DEG C is until solution is changed into red-black Color, (R) -3- (4- iodo -3- the fluorophenyls) -2- oxo -5- oxazole alkyl methanol (compounds for adding 47.2g embodiments 2 to prepare I ') and compound shown in the Formula II a of the preparation of 34.4g embodiments 1,100ml DMF solutions are dissolved in, under nitrogen protection, stirred at 90 DEG C Reaction 2h, TLC monitoring reaction is mixed, is filtered through diatomite while hot.50ml is concentrated at 70 DEG C, 500ml purified waters, stirring is added 1.0h, filtering, filter cake is washed with the methanol aqueous solutions of 50ml 50% (volumetric concentration), and 50 DEG C dry 8h.Added in gained solid The methanol aqueous solutions of 430ml 50% (volumetric concentration), is heated to 70 degree of mashing 2h, is cooled to room temperature, filters, 30ml methanol rinses, Compound 45g shown in TD is dried to obtain in 50 degree, yield is 87%, and purity is 98.6%.
1H-NMR(DMSO-d6)δ8.89(s,1H),8.16(m,2H),7.69(m,2H),7.49(dd,1H),5.25(t, 1H),4.73(m,1H),4.45(s,3H),4.13(t,1H),3.86(dd,1H),3.67(m,1H),3.58(m,1H)。
Embodiment 4:The preparation of (2R)-(4- bromine-3-fluorophenyls amino) -2- hydrox y-propanols butyrate (compound III ')
The bromo- 3- fluoroanilines of 19.0g 4- are dissolved in 200ml isopropanols, 14.4g (R)-Glycidyl butyrate is added, It is heated to reflux, insulation reaction 12h.Remove solvent under reduced pressure, obtain product (2R)-(4- bromine-3-fluorophenyls amino) -2- hydroxyls-the third Alcohol butyrate, product can be directly used for next step reaction without purifying.
Embodiment 5:(R) preparation of -3- (4- bromo -3- fluorophenyls) -2- oxo -5- oxazoles alkyl methanol (compound I ")
33.4g (2R)-(4- bromine-3-fluorophenyls amino) -2- hydrox y-propanol butyrates are dissolved in 150ml dichloromethane In, 17.8g carbonyl dimidazoles are added, it is heated to 30~35 DEG C, insulation reaction 16h.100ml water is added, 0.5h is stirred, separated Machine layer, anhydrous sodium sulfate drying, concentration.100ml methyl alcohol dissolving residue is added, after dissolving clarification, 5.94g sodium methoxides is added, 2h is stirred at room temperature, solvent is removed under reduced pressure, 200ml dichloromethane is added, respectively with the watery hydrochloric acid of 50ml 5%, the carbon of 50ml 7% Sour hydrogen sodium water solution, 50ml purifying water washings, organic layer anhydrous sodium sulfate drying are filtered, are concentrated to give title compound 31.5g, yield is 85%.
Using the method for embodiment 5 prepare (R) -3- (4- bromo -3- fluorophenyls) -2- oxos -5- oxazoles alkyl methanols with Compound reaction shown in Formula II prepared by the method for embodiment 1, the method for azoles amine (compound shown in TD) is similar with preparing Thailand implements Example 3.
Embodiment 6:The preparation of compound shown in following formula (I-2)
(2R)-(4- bromine-3-fluorophenyls amino) -2- hydrox y-propanol butyrates prepared by 33.4g embodiments are dissolved in In 150ml dichloromethane, 17.8g carbonyl dimidazoles are added, be heated to 30~35 DEG C, insulation reaction 16h.100ml water is added, is stirred 0.5h is mixed, organic layer is separated, anhydrous sodium sulfate drying, concentration obtains title compound 31.5g, and yield is 85%.
Embodiment 7:The preparation of safe ground azoles amine
In the there-necked flask of the 500ml of reflux condensing tube and thermometer is configured with, 1.57g Pd (OAc) is added2, 3.7g PPh3150ml DMF are dissolved in, nitrogen is replaced as, 33.75ml triethylamines are subsequently adding, stirring at 70 DEG C is until solution is changed into red-black Color, adds compound shown in the Formula II of compound shown in the formula (I-2) of the preparation of 47.2g embodiments 6 and the preparation of 34.4g embodiments 1, 100ml DMF solutions are dissolved in, under nitrogen protection, in 90 DEG C of stirring reaction 2h, TLC monitoring reactions, are filtered through diatomite while hot. 70 DEG C are concentrated into 50ml, add 500ml purified waters, stir 1.0h, and filtering, filter cake 100ml methyl alcohol dissolves, and adds 5.94g first Sodium alkoxide, stirs 2h at room temperature, removes solvent under reduced pressure, and filter cake is washed with the methanol aqueous solutions of 50ml 50% (volumetric concentration), 50 DEG C Dry 8h.The methanol aqueous solutions of 430ml 50% (volumetric concentration) is added in gained solid, 70 degree of mashing 2h are heated to, is cooled to Room temperature, filtering, 30ml methanol rinses are dried to obtain compound 45g shown in TD in 50 DEG C, and yield is 87%, and purity is 98.6%, Pd contents:< 2ppm.
The preparation of the following formula: compound TD-1 of embodiment 8
1) preparation of compound (I-3):
By 14.5g chemical compounds Is " it is dissolved in 70mL tetrahydrofurans (THF), and 6.33g (1.2eq.) benzyl chloride is added to In the solution, after being cooled to 0 DEG C, 1.2g (1.0eq) sodium hydride is slowly dividedly in some parts.Under agitation by reactant mixture liter Temperature to sustained response at 40 DEG C 5 hours, step-down concentration adds 300mL ethyl acetate, and organic layer salt water washing uses anhydrous sulphur Sour sodium is dried, filtered, concentration, obtains the 15.6g title compounds for white crystal, yield 82%.
2) chemical combination TD-1, is prepared by compound (I-3)
In the there-necked flask of 250ml, 11.41g compounds 1-3,6.46g (1.05eq.) compound ii a, 1.14g Pd/C is added, 9.09g triethylamines, 80ml DMF, nitrogen protection are heated to 80 DEG C, and insulation reaction 3h is filtered by diatomite, adds 400ml 7% sodium bicarbonate aqueous solution, stirs 10min, is extracted with 150ml*3 ethyl acetate, successively with 150ml distilled water, 150ml saturations Sodium-chloride water solution washing, anhydrous sodium sulfate drying, filter, be concentrated to give target compound TD-1 9.26g, yield is 67%.
By compound (I-3) and the method class of compound IIa reaction prepare compounds TD-1 (hydroxyl protecting group R is benzyl) Like compound (I-2) in embodiment 7 and the method for IIa reaction prepare compounds TD-1 (R is positive bytyry).
Embodiment 9:The preparation (in compound shown in TD-1 during R=benzyls) of safe ground azoles amine:
By TD-1 (during R=benzyls):10g TD-1 are dissolved in 80ml methyl alcohol, 0.5gPb-C/H is added2, nitrogen displacement 3 times, Hydrogen is replaced three times, and Hydrogen Vapor Pressure is 0.5Mpa, is heated to reflux, and HPLC monitoring reactions, reaction is complete, room temperature is cooled to, through micro- Twice, concentration is dried hole membrane filtration, obtains compound described in title.
Embodiment 10:Following formula I ' shown in compound preparation
Compound (1-9) (0.9eq) is dissolved in 1L tetrahydrofurans (THF), sodium hydrogen (1.1eq) is added to the solution In, after being cooled to about 0 DEG C, benzyl chloride (1.0eq) being added in reaction solution, stirring to reaction terminates, ethyl acetate extraction, point From obtaining benzyl oxide after concentration.Subsequent similar embodiment 2 step (3) (R) -3- (4- iodo -3- fluorophenyls) -2- oxo -5- oxazoles The preparation method of alkyl methanol, 4 iodine for acting on phenyl ring through silver trifluoroacetate and iodine monochloride in acetonitrile replace, and obtain 4 Position replaces , oxazolidones hydroxyl compound shown in the formula (1-9) of benzyl protection by iodine, referring next to the step of embodiment 1 (4) Synthetic method prepares corresponding boric acid, and benzyl is finally removed in the concentrated hydrochloric acid obtains target compound Formulas I ' shown in compound, MS ESI[M]+:255.
Embodiment 11:The preparation on safe ground azoles amine (compound shown in TD)
In the there-necked flask of the 500ml of reflux condensing tube and thermometer is configured with, 1.83g Pd are added2(dba)3, 1.12g PCy3400ml DMF are dissolved in, nitrogen is replaced as, 0.5h is stirred at room temperature, be subsequently adding 60.6g triethylamines, add 51.0g formulas I ' Shown compound and compound shown in 57.6g formulas II ', under nitrogen protection, in 70 DEG C of stirring reactions, HPLC monitorings are reacted, while hot Filtered through diatomite.50ml is concentrated at 70 DEG C, 500ml purified waters are added, is extracted with dichloromethane 400ml*2, anhydrous slufuric acid Sodium is dried, filtering, is concentrated to give solid, and the methanol aqueous solutions of 500ml 50% (volumetric concentration), heating are added in gained solid To 70 degree of mashing 2h, room temperature is cooled to, filtered, 40ml methanol rinses are dried to obtain compound 65.9g shown in TD in 50 DEG C, receive Rate is 89%, and purity is 98.8%.
Embodiment 12:The preparation of phosphoric acid safe ground azoles amine (TD-P)
The round-bottomed flask of the jacket of 5L, the machine mixer equipped with top, additional funnel, thermocouple, nitrogen inlet and follows Ring cooling unit.Compound (70.0g, 0.189mol), THF (1.4L, 20 volumes) and triethylamine shown in TD are added in flask (58.2g, 0.575mol).Slurry is stirred, and jacket temperature is set as 0 DEG C.Added in additional funnel and be dissolved in THF (70mL, 1 body Product) POCl3 (87.0g, 0.567mol).When internal temperature reaches 1 DEG C, POCl3Solution is to be added dropwise in 44min. The mixture is stirred 3 hours at 1-2 DEG C.To in three neck round bottom, water (1.4L) is added, 3.8 are cooled in ice, brine bath ℃.Reactant mixture pumped into 1 hour and water surface is quenched.Maximum temperature during being quenched is 11.9 DEG C.Yellow syrup is stirred Overnight, filter, filter cake is rinsed with water (700mL) and methyl alcohol (700mL).Product is being dried under vacuum to constant weight at room temperature.Obtain Target product, yield be 83.4g (98.1%), purity is 96.5%.
Embodiment 13:The preparation of safe ground azoles amine disodic alkaliine
Phosphoric acid safe ground azoles amine (30.0g) prepared by embodiment 9 is added in the reactor of 1L, adds methyl alcohol (360mL), slurry Body is stirred at room temperature, and methyl alcohol (43.1g) solution of 25% sodium methoxide is added dropwise in 10min.Slurry is stirred at room temperature Filtered after 1h.Reactor and filter cake are rinsed with methyl alcohol (150mL) and acetone (150mL).Product is done in 50-60 DEG C in vacuum tank It is dry, obtain 32.6g crude products safe ground azoles amine disodic alkaliine.Crude product is dissolved in water (325mL), adds activated carbon, stirs at room temperature 30 minutes.2N NaOH adjust slurry pH to 11.Slurry is filtered by diatomite, and filtrate is filtered again with the filter membrane of 0.45 μ. Filtrate is added dropwise in acetone (1.3L), and gained slurry is stirred overnight, then slurry by filtration, is rinsed with acetone (320mL), in 50 Dry DEG C in vacuum tank, be redissolved in water (230mL), add sodium hydroxide solution that pH value is adjusted into 10, the solution leads to The membrane filtration for crossing 0.45 μ removes color, and filtrate is added dropwise in acetone (950ml), filters, and is then rushed with acetone (230mL) Wash.After product is dried, weight is 25.8g (total recovery is 79%), HPLC:99.6%.
Embodiment 14:The preparation of following formula: compound Ib
In the there-necked flask of the 500ml of reflux condensing tube and thermometer is configured with, 14.5g compounds i, 13.97g are added (1.1eq.) pinacol diborate, 1.83g (0.05eq.) PdCl2(dppf) 2,110ml DMF, under nitrogen protection, at 70 DEG C Stirring reaction, HPLC monitoring reactions, filters through diatomite while hot.50ml is concentrated at 70 DEG C, 400ml purified waters is added, with two Chloromethanes 400ml*2 is extracted, anhydrous sodium sulfate drying, filtering, is concentrated to give compound Ib 12.74g, and yield is 74%, purity It is 99.3%;1H-NMR(DMSO-D6):1.32 (s, 12H), 4.45 (s, 3H), 8.13 (d, 1H), 8.18 (d, 1H), 8.90 (s, 1H)。
The preparation of safe ground azoles amine of embodiment 15 (TD)
In the there-necked flask of the 500ml of reflux condensing tube and thermometer is configured with, 1.83g Pd are added2(dba)3, 1.12g PCy3400ml DMF are dissolved in, nitrogen is replaced as, 0.5h is stirred at room temperature, be subsequently adding 60.6g triethylamines, add 51.0g chemical combination Thing i and 85.2g compound lb, under nitrogen protection, in 70 DEG C of stirring reactions, HPLC monitoring reactions are filtered through diatomite while hot. 70 DEG C are concentrated into 50ml, add 500ml purified waters, are extracted with dichloromethane 400ml*2, anhydrous sodium sulfate drying, filtering, concentration Solid is obtained, the methanol aqueous solutions of 500ml 50% (volumetric concentration) is added in gained solid, be heated to 70 degree of mashing 2h, cooling To room temperature, filtering, 40ml methanol rinses are dried to obtain compound 61.2g shown in TD in 50 DEG C, and yield is 82.7%, and purity is 98.9%.
It should be noted that the foregoing is only presently preferred embodiments of the present invention, it is not intended to limit the invention, it is all Any modification, equivalent and improvement for being made within the spirit and principles in the present invention etc., should be included in guarantor of the invention Within the scope of shield.

Claims (8)

1. a kind of preparation method of compound shown in following formula TD, comprises the following steps:
(1) by compound IV and glycidol butyl ester back flow reaction in isopropanol, compound III is generated, is directly used in next Step reaction,
(2) the compound III for obtaining step (1) and dicarbapentaborane imidazoles are in organic solvent dichloromethane, DMF, isopropanol or THF In in 25 DEG C~40 DEG C reactions, generation compound I:
(3) by compound shown in following formula I and compound shown in Formula Il in the presence of palladium catalyst, chemical combination shown in reaction generation TD Thing, described palladium catalyst is double (triphenylphosphine) palladiums (II) of dichloro, tetrakis triphenylphosphine palladium (0), palladium carbon, Pd (OAc) 2 or PCy3/Pd2 (dba) 3 (dba=benzalacetones):
Wherein, L is leaving group, R1It is BF3Or BR2R3, wherein R2And R3The independent C selected from by OH and any substitution1~C6One Unit and the group of dihydroxylic alcohols composition, wherein R2And R3Together can be with cyclization.
2. method according to claim 1, wherein the leaving group L is selected from halogen, trifluoro-methanesulfonyl oxy, methylsulfonyl oxygen Base, and the group that substituted or unsubstituted phenylsulfonyloxy group is constituted;The R1It is BF3、B(OH)2Or
3. method according to claim 2, wherein the leaving group L is selected from chlorine, bromine and iodine.
4. method according to claim 3, wherein, be added to palladium catalyst in organic solvent DMF by step (3), Ran Houjia Enter triethylamine, 60~80 DEG C of stirrings add compound of formula I to be reacted with Formula II compound to dissolving, generation compound TD.
5. method according to claim 4, wherein the compound of formula I is reacted with Formula II compound, generates compound TD, after reaction terminates, filters through diatomite while hot, and concentration adds purified water, is extracted with dichloromethane or ethyl acetate, anhydrous Sodium sulphate is dried, filtering, is concentrated to give solid, to 50% methanol aqueous solution (volumetric concentration) is added in gained solid, is heated to 70 DEG C of mashing, are cooled to room temperature, filter, and methanol rinses are dried to obtain compound shown in high-purity TD in 50 DEG C.
6. a kind of method for preparing compound shown in following formula TD-P, it is characterised in that usage right 1~5 any side of requirement Compound shown in the formula TD that method is prepared, with POCl3、POCl(OBn)2Or P (N-iPr2)(O-tBu)2Give birth at reaction conditions Into:
7. method according to claim 6, it is characterised in that also including using compound shown in TD-P at reaction conditions with Compound shown in alkali reaction generation following formula TD-PN
Wherein, M is PO (OH)2Pharmaceutically acceptable salt.
8. a kind of following formula: compound
Wherein, L is bromine or iodine.
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