JP6099644B2 - プロリルヒドロキシラーゼ阻害剤としての化合物の多形体、およびその使用 - Google Patents
プロリルヒドロキシラーゼ阻害剤としての化合物の多形体、およびその使用 Download PDFInfo
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- 230000014848 ubiquitin-dependent protein catabolic process Effects 0.000 description 1
- 230000001457 vasomotor Effects 0.000 description 1
- 102100035070 von Hippel-Lindau disease tumor suppressor Human genes 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000000080 wetting agent Substances 0.000 description 1
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Description
または、実施例1において調製された式Iの化合物のメタノール溶液に貧溶媒として水を添加するステップ、および生じる結晶多形を回収するステップを含む結晶多形を調製する方法を提供する。
または、実施例1において調製された式Iの化合物のメタノール/酢酸エチルの混合溶媒溶液に実施例5において調製された結晶多形を種晶として添加した後に自然沈降させるステップ、および生じる結晶多形を回収するステップを含む、結晶多形を調製する方法を提供する。
不活性ガス(N2)下において、4−ニトロ−o−フタロニトリル(9.2g)、フェノール(5.0g)、K2CO3(7.3g)およびDMSO(40mL)をフラスコに添加して室温で48時間撹拌し反応させ、次いで60℃に加熱して2時間反応させた。冷却後、反応混合物をろ過し、生じた黄色の固体を乾燥して化合物1を11.6g得た。
50%のNaOH溶液(25mL)を化合物1(11.3g)のメタノール溶液に添加した。反応が完了するまで溶液を加熱して48時間還流させた。次いで濃HClを添加してpH値を3に調整した。沈殿物をろ過して乾燥し、化合物2を10.5g得た。
化合物2(6.0g)を氷酢酸(60mL)と無水酢酸(60mL)に溶解させ、加熱して3時間還流させた。溶媒をロータリーエバポレーターで除去して化合物3を得た。
化合物3(6.0g)とイソシアノ酢酸メチル(2.65g)をTHF(60mL)に溶解させた。DBU(CAS番号6674−22−2)3.54gを室温で滴加し、室温で1時間撹拌した。アルカリ性条件下で酢酸エチルを用いて抽出して不純物を除去した後、水相のpH値を希HClで3に調整した。酢酸エチルで抽出し、水で洗浄し、無水Na2SO4で乾燥させ、ろ過し、得られた有機相をロータリーエバポレーターで蒸留して化合物4を9.0g得た。
CH3OH中の化合物4(9.0g)を濃HClに添加し、4時間60℃に加熱した。生じた沈殿をろ過し、粗生成物を5.8g得た。生成物をクロマトグラフィーで更に精製し、化合物5を1.85g得た。
POCl3(10mL)中の化合物5(1.77g)を約70℃に加熱して3時間反応させ、次いで冷却して氷中に注いだ。POCl3を完全に分解させた後、得られた沈殿物をろ過して水で洗浄し、化合物6を1.45g得た。
N2雰囲気下において、化合物6(1.41g)、ジオキサン(20mL)、Pd[P(C6H5)3]4(0.49g)、K2CO3(1.78g)およびトリメチルボラン(0.54g)を撹拌混合し、加熱して3時間還流させ、次いで室温で48時間撹拌した。濃縮後、得られた混合物を酢酸エチルで抽出し、水で洗浄し、乾燥させ、ろ過し、次いでロータリーエバポレーターで蒸留した後にクロマトグラフィーを通して更に精製し、化合物7を0.42g得た。
化合物7(1.02g)をエタノール(10mL)と2NのNaOH(10mL)の混合物に添加し、1.5時間還流させた。ろ過によって不純物を除去した後、得られた混合物をロータリーエバポレーターで蒸留してエタノールを除去した。次いで、得られた淡黄色の沈殿物をろ過し、水で洗浄し、乾燥して化合物8を0.5g得た。
化合物8(0.37g)、グリシンメチルエステル塩酸塩(0.44g)およびPyBOP(CAS番号128625−52−5)1.00gをジクロロメタン(15mL)に添加し、次いでトリエチルアミン(0.74mL)とビス(イソプロピル)エチルアミン(1.0mL)を添加し、室温で3時間、撹拌して反応させた。ろ過後、有機相を水で洗浄し、乾燥し、ろ過した後、回転蒸発させ、シリカゲルカラムによって更に精製し、化合物9を0.29g得た。
THF中の化合物9(0.28g)を1NのNaOH(5mL)に添加し、室温で1時間撹拌して反応させた。回転蒸発によってTHFを除去した後、残渣のpH値を希HClで約3に調整し、酢酸エチルで更に洗浄し、ろ過し、乾燥させ、化合物10、すなわち式Iの化合物を0.21g得た。
上記実施例1に開示した方法によって調製した式Iの化合物を、室温でメタノール/MTBE(メチルtert−ブチルエーテル)の混合溶媒に溶解させた後、自然沈降させて融点が174〜177℃の望ましい多形体Iを得た。
上記実施例1に開示した方法で調製した式Iの化合物の過剰量のスラリー懸濁液を、H2O/アセトニトリル(3:1)もしくはH2O/エタノールの混合溶媒中で室温もしくは50℃にて少なくとも48時間、またはメタノール/H2Oの混合溶媒中で室温にて48時間以上撹拌し、融点が209〜212℃の望ましい結晶形IIを得た。
上記実施例1に開示した方法で調製した式Iの化合物を、室温でメタノール/アセトニトリルの混合溶媒に溶解させた後、自然沈降させ、望ましい結晶形IIIを得た。
上記実施例1に開示した方法で調製した式Iの化合物の過剰量のスラリー懸濁液を、MTBE、またはMTBE/ヘプタン、IPAc/ヘプタン、酢酸エチル/ヘプタンもしくはH2O/アセトンの混合溶媒中で室温にて48時間以上撹拌し、望ましい結晶形IVを得た。
上記実施例1に開示した方法で調製した式Iの化合物の過剰量のスラリー懸濁液を、MTBE/ヘプタンの混合溶媒中で50℃にて48時間以上撹拌し、望ましい結晶形Vを得た。あるいは、水を貧溶媒として式Iの化合物のメタノール溶液に添加し、融点が190〜193℃の望ましい結晶形Vを得た。
上記実施例1に開示した方法で調製した式Iの化合物の過剰量のスラリー懸濁液を、アセトニトリル/H2O(1:1)またはTHF/H2Oの混合溶媒中で室温にて48時間以上撹拌し、望ましい結晶形VIを得た。
実施例6の方法で調製した結晶形Vを180℃に加熱し、望ましい結晶形VIIを得た。
均一TR−FRET技術(米国特許出願第2008/004817号;Dao JHら、Anal Biochem.2009、384:213〜23も参照)を用いてHIF−PHD2活性を測定した。1/2面積の96ウェルプレートの各ウェルに、試験化合物の2μL DMSO溶液と600nMの全長PHD2を含有するアッセイ緩衝液(50mMのTris PH7.4/0.01%のTween−20/0.1mg/mlのBSA/1mMのアスコルビン酸ナトリウム/20μg/mlのカタラーゼ/10μMのFeSO4)40μLとを添加した。30分の室温での前保温後、基質8μL(0.2μMの2−オキソグルタル酸および0.5μM HIF−1αペプチドビオチニル−DLDLEMLAPYIPMDDDFQLの各最終濃度)を添加することによって酵素反応を開始させた。室温で2時間経過後、1mMのオルトフェナントロリン最終濃度、0.1mM EDTA、0.5nM抗(His)6LANCE試薬、100nM AF647標識ストレプトアビジン、および30nM (His)6−VHL−エロンギンB−エロンギンC複合体に失活/検出混合液50μLを添加することによって反応を停止させ、シグナルを発生させた。665nmと620nmでの時間分解蛍光シグナルの比を決定し、並行して実施した非阻害対照サンプルに対して、阻害率(%)を計算した。上記実施例1に開示した方法で調製した式Iの化合物の場合、IC50は2μM前後であると判定した。
8週齢のオスのC57BL/6マウスに、化合物の一結晶形の0.5%CMC中懸濁液を、20、60および100mg/kgで経口投与した。投与6時間後、眼窩静脈叢から血液サンプルを得て、血清を採集した(Robinson Aら、Gastroenterology.2008、134:145〜55;Hsieh MMら、Blood.2007、110:2140〜7も参照)。製造元の指示書に従い、電気化学発光に基づく免疫測定(MSD)によってサンプルをEPOについて分析した。懸濁液に本発明における結晶形VIを使用した場合に誘導されたEPOは、6、297前後であって、誘導を行わなかった媒体群の300倍超であると判定した。
上記実施例1に開示した方法で調製した式Iの化合物8.3mgを酢酸イソプロピル1mLに添加し、撹拌し、ろ過した。次いで、本発明において開示された結晶形IV9.6mgと、結晶形VI1.97mgとをその溶液に添加し、室温で36時間撹拌した。遠心分離し、乾燥した後、生じた結晶形は、純粋に結晶形VIであると判定した。従って、結晶形VIは、本研究において熱力学的に最も安定な結晶形であると実証された。
Claims (12)
- 7.1°±0.2°、9.4°±0.2°、10.6°±0.2°、16.5°±0.2°、18.8°±0.2°、21.3°±0.2°、22.2°±0.2°および26.9°±0.2°の回折角2θに特性ピークを有するX線粉末回折パターンを特徴とする、請求項1に記載の結晶多形。
- 図6に示されるX線粉末回折パターンを特徴とする、請求項1に記載の結晶多形。
- 200〜203℃の融点を特徴とする、請求項1から3のいずれか一項に記載の結晶多形。
- 請求項1から4のいずれか一項に記載の式Iの化合物の結晶多形を調製する方法であって、式Iの化合物の過剰量を、アセトニトリル/H2O(1:1)またはTHF/H2Oの混合溶媒中で室温にて少なくとも48時間スラリー化する工程、および請求項1から4のいずれか一項に記載の結晶多形に達する生成した結晶を回収する工程を含む方法。
- 請求項1から4のいずれか一項に記載の結晶多形の治療有効量、および薬学的に許容される添加物、補助薬または担体を含む、医薬組成物。
- 請求項1から4のいずれか一項に記載の結晶多形が85wt%以上の純度を有する、請求項6に記載の医薬組成物。
- 請求項1から4のいずれか一項に記載の結晶多形が99wt%以上の純度を有する、請求項6に記載の医薬組成物。
- 請求項1から4のいずれか一項に記載の結晶多形を1wt%〜99wt%含む、請求項6から8のいずれか一項に記載の医薬組成物。
- 低酸素誘導因子レベルまたは低酸素誘導因子の活性に関係する疾患、障害、または病状の治療における使用のための、請求項1から4のいずれか一項に記載の結晶多形を含む医薬。
- 虚血、貧血、または虚血もしくは貧血に伴う疾患、障害もしくは病状の治療における使用のための、請求項1から4のいずれか一項に記載の結晶多形を含む医薬。
- 対象の虚血、貧血、創傷治癒、自己移植、同種移植、異種移植、全身性高血圧、サラセミア、糖尿病、がんもしくは炎症性障害、またはこれらの二種以上の組み合わせから選択される疾患、障害もしくは病状の治療における使用のための、請求項1から4のいずれか一項に記載の結晶多形を含む医薬。
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