JP2017529371A - (シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物を調製する方法 - Google Patents
(シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物を調製する方法 Download PDFInfo
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- UMMBRZLJMBSFAJ-RXMQYKEDSA-N C[C@H](CC#N)c(c(Cl)ncn1)c1Cl Chemical compound C[C@H](CC#N)c(c(Cl)ncn1)c1Cl UMMBRZLJMBSFAJ-RXMQYKEDSA-N 0.000 description 2
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Abstract
Description
本出願は、2014年9月26日に出願された米国仮出願第62/055,893号からの優先権を主張する。この仮出願の全内容はこれにより本明細書において参照として援用される。
本開示の分野
本開示は、(シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物を調製する方法に関し、より特定すれば(R)−4−(5−メチル−7−オキソ−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジンおよびそのN−保護誘導体を調製する方法に関し、これらは、イパタセルチブ(すなわち、(S)−2−(4−クロロフェニル)−1−(4−((5R,7R)−7−ヒドロキシ−5−メチル−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジン−1−イル)−3−(イソプロピルアミノ)−プロパン−1−オン)の合成に中間体として使用できる。本開示は、これらの方法に用いられる中間体である様々な化合物にさらに関する。
AKT(タンパク質キナーゼBとしても公知)は、ある特定のヒト腫瘍で過剰発現するセリン/トレオニンタンパク質キナーゼである。イパタセルチブは、現在、固形腫瘍、胃がんおよび前立腺がんを処置するための臨床試験で評価されているAKT阻害剤である。イパタセルチブは、例えば、米国特許第8,063,050号(例えば、実施例14を参照されたい)、ならびに国際特許出願公開第2008/006040号で開示されている。
本開示は、(シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物、より特定すれば、(R)−4−(5−メチル−7−オキソ−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジンならびにそのN−保護誘導体、例えばtert−ブチル−(R)−4−(5−メチル−7−オキソ−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジン−1−カルボキシレートを調製する改善した方法を提供する。本開示は、AKT阻害剤、特に、イパタセルチブを調製する方法、これらの(シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物およびそのN−保護誘導体を調製する、改善した方法の使用をさらに提供する。
本明細書において以下でさらに詳述されているように、本開示は、一般的に、(シクロペンチル[d]ピリミジン−4−イル)ピペラジン化合物を調製する、改善した方法を対象とし、より特定すれば、(R)−4−(5−メチル−7−オキソ−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジン、ならびにそのN−保護誘導体、例えば、一般的に以下のスキーム2で例示されているtert−ブチル−(R)−4−(5−メチル−7−オキソ−6,7−ジヒドロ−5H−シクロペンタ[d]ピリミジン−4−イル)ピペラジン−1−カルボキシレートを調製する、改善した方法を対象とする:
A.(シクロペンタ[d]ピリミジン−4−イル)ピペラジン化合物
1.環化ステップ
2.ピペラジン添加ステップ
3.臭素化ステップ
4.塩素化ステップ
5.ピリミジン合成ステップ
6.共役付加ステップおよび酵素的分割ステップ
7.一貫プロセス改善および全プロセス効率
8.例示的な実施形態
B.AKT阻害剤合成
C.反応生成物および中間体化合物
D.定義
(実施例2):酵素的分割
(実施例3):ピリミジン合成
(実施例4):塩素化−臭素化−SNAr一貫プロセス
(実施例5):グリニャール環化
(実施例6):比較例−グリニャールの試行
クロロ−ニトリルで置換されている類似体化合物の環化
(実施例7):比較例−HBrを使用した臭素化反応の試行
Claims (39)
- Yがブロモである、請求項2に記載の方法。
- Lvが、水素およびハロゲンから選択され、R1が、アセチル、トリフルオロアセチル、フタルイミジル、ベンジル、トリフェニルメチル、ベンジリデニル、p−トルエンスルホニル、p−メトキシベンジル、tertブチルオキシカルボニル、9−フルオレニルメチルオキシカルボニルおよびカルボベンジルオキシから選択される、請求項2または請求項3に記載の方法。
- 式IVの前記化合物またはその塩が、約1モル当量から約1.5モル当量の前記ピペラジン化合物と接触させられる、請求項2から4のいずれか一項に記載の方法。
- 式IVの前記化合物またはその塩が、前記ピペラジン化合物と、室温で接触させられる、請求項2から5のいずれか一項に記載の方法。
- 各Xがクロロである、請求項7に記載の方法。
- 各Xがヒドロキシルである、請求項7に記載の方法。
- 前記臭素化剤が、臭素、ブロモトリメチルシラン、オキシ臭化リン、N−ブロモスクシンイミドおよび三臭化リンから選択される、請求項7から9のいずれか一項に記載の方法。
- 式Vの前記化合物またはその塩が、約2モル当量から約7モル当量の前記臭素化剤と接触させられる、請求項7から10のいずれか一項に記載の方法。
- 前記臭素化反応が、約70℃から約75℃の温度で実行される、請求項7から11のいずれか一項に記載の方法。
- 式IVの前記化合物または塩が、式Vの前記化合物または塩の前記臭素化の後で、および前記ピペラジン化合物との反応の前に単離されない、請求項7から12のいずれか一項に記載の方法。
- 臭素化反応中に、揮発性副生成物を除去するために蒸留が使用される、請求項7から13のいずれか一項に記載の方法。
- 式Vcの前記化合物または塩が、Vbの前記化合物または塩の前記塩素化の後で、および臭素化の前に単離されない、請求項15に記載の方法。
- 塩素化剤が、オキシ塩化リンおよび三塩化リンから選択される、請求項15または請求項16に記載の方法。
- 式Vbの前記化合物またはその塩が、約1.5モル当量から約5モル当量の前記塩素化剤の前記と接触させられる、請求項15から17のいずれか一項に記載の方法。
- 式VIbの前記化合物または塩をホルムアミジン塩と接触させて、式VIbの前記化合物またはその塩を環化するステップを含む、請求項19に記載の方法。
- 分離が、酵素的分割により達成され、さらに、前記酵素的分割が、式IVaおよび式VIbの前記化合物、またはそれらの塩を含む前記異性体混合物を、ニトリラーゼ酵素またはリパーゼ酵素と接触させるステップにより達成される、請求項21に記載の方法。
- 酵素的分割が、ニトリラーゼ酵素を使用することにより達成される、請求項22に記載の方法。
- 前記異性体混合物が、酵素的分割の前に、反応生成混合物から単離されない、請求項22または請求項23に記載の方法。
- 前記クロトノニトリルが、約1から約1.5モル当量のマロネートと接触させられる、請求項21から24のいずれか一項に記載の方法。
- R1がアミノ保護基である、請求項1から25のいずれか一項に記載の方法。
- R1が、アセチル、トリフルオロアセチル、フタルイミジル、ベンジル、トリフェニルメチル、ベンジリデニル、p−トルエンスルホニル、p−メトキシベンジル、tertブチルオキシカルボニル、9−フルオレニルメチルオキシカルボニルおよびカルボベンジルオキシから選択される、請求項26に記載の方法。
- メタル化剤が有機金属化合物である、請求項1から27のいずれか一項に記載の方法。
- 前記有機金属化合物が、マグネシウムまたはリチウムを含む、請求項28に記載の方法。
- 前記有機金属化合物が、イソプロピルマグネシウムクロリド、イソプロピルマグネシウムクロリド塩化リチウム錯体、sec−ブチルマグネシウムクロリド、n−ブチルリチウム、sec−ブチルリチウム、t−ブチルリチウム、リチウムトリ−n−ブチルマグネシエート、リチウムトリイソプロピルマグネシエートおよびリチウム(イソプロピル)(ジ−n−ブチル)マグネシエートから選択される、請求項29に記載の方法。
- 式IIIの前記化合物またはその塩が、約1モル当量から約1.5モル当量の前記メタル化剤の前記と接触させられる、請求項1から30のいずれか一項に記載の方法。
- 先行する請求項のいずれか一項に記載の方法により調製される、式Iの化合物。
- 式IX:
(式中、R2は、水素またはアミノ保護基である)の化合物またはその塩を調製する方法であって、
(i)式III
(式中、R1は、水素またはアミノ保護基である)の化合物またはその塩を、メタル化剤と接触させて、式I:
の化合物またはその塩を形成するステップ;
(ii)式Iの前記化合物またはその塩を還元して、式VIIa:
の化合物またはその塩を形成するステップ;
(iii)式VIIaの前記化合物またはその塩を、任意選択で脱保護して、式VIIb:
の化合物またはその塩を形成するステップ;ならびに
(iv)式VIIbの前記化合物またはその塩を、式VIII:
の化合物またはその塩と接触させて、式IXの前記化合物またはその塩を形成するステップを含む、方法。 - 請求項33に記載の方法により調製される、式IXの化合物。
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| CN112359078A (zh) * | 2021-01-12 | 2021-02-12 | 凯莱英生命科学技术(天津)有限公司 | 异丁酸酯类化合物的手性拆分方法 |
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