申请人:CIBA-GEIGY AG
公开号:EP0319471A2
公开(公告)日:1989-06-07
The invention provides a process for the production of the enantiomers of an aminophosphonous acid having the formula (I), or the corresponding zwitterion form:
in which
R and R′ are different and each is hydrogen; C₁-C₆alkyl; C₁-C₆alkyl substituted by i) one or two -COOR², -OR², -SR² or -CONH₂ groups, in which R² is hydrogen, phenyl, or C₁-C₃alkyl which is optionally substituted by a C₆-C₁₀aryl radical; ii) by an -SS-CH₂-CH(NH₂)-PO₂H₂ group; iii) by -NH₂ or protected amino; iv) by an -NH-C(=NH)NH₂ group; v) by a C₆-C₁₀aryl radical which is optionally substituted by one or two hydroxyl groups; or vi) by a heterocyclic ring having 3 to 7 ring atoms including one or more nitrogen atoms, which ring is optionally fused to a benzene ring; and R˝ is hydrogen or C₁-C₆alkyl or R˝, together with the -NH-C(R)(R′)- residue to which it is bonded, are the atoms required to complete a pyrrolidin-2-yl or piperidin-2-yl ring which is optionally substituted by a hydroxyl group or by a group R²; which process comprises:
a) selectively cleaving, using Penicillin-G-amidase, one enantiomer of a racemic mixture of N-acyl derivatives of the aminophosphonous acid of formula I, the N-acyl derivative having the formula II:
wherein R, R′ and R˝ are as defined under formula I, and R³ is a straight- or branched C₁-C₆alkyl group which is optionally substituted by one or more of halogen, hydroxy, C₁-C₃alkoxy, phenyl, phenoxy and/or thienyl, the phenyl- or phenoxy substituents being themselves optionally substituted by C₁-C₃alkyl, hydroxy, nitro, amino, halogen and/or C₁-C₃alkoxy;
b) separating the mixture of free amino acid and unhydrolysed N-acyl derivative of formula II; and
c) de-acylating, non-enzymatically, the un-hydrolysed material.
本发明提供了一种具有式(I)或相应齐聚物形式的氨基膦酸对映体的生产工艺:
其中
R 和 R′不同,且各自为氢;C₁-C₆烷基;被 i) 一个或两个 -COOR²、-OR²、-SR² 或 -CONH₂ 基团取代的 C₁-C₆ 烷基,其中 R² 是氢、苯基或任选被 C₆-C₁₀ 芳基取代的 C₁-C₃ 烷基;v) 一个 C₆-C₁₀芳基,该芳基任选被一个或两个羟基取代;或 vi) 具有 3 至 7 个环原子(包括一个或多个氮原子)的杂环,该环可选择与苯环融合;和 R˝ 是氢或 C₁-C₆ 烷基或 R˝,连同与其结合的-NH-C(R)(R′)-残基,是完成吡咯烷-2-基或哌啶-2-基环所需的原子,该环任选被一个羟基或一个基团 R² 取代;该工艺包括:
a) 使用青霉素-G-氨基酶选择性地裂解式 I 氨基膦酸 N-酰基衍生物外消旋混合物中的一个对映体,该 N-酰基衍生物具有式 II:
其中 R、R′和 R˝ 如式 I 所定义,R³ 是直链或支链 C₁-C₆烷基,可任选被卤素、羟基、C₁-C₃烷氧基中的一个或多个取代、苯基、苯氧基和/或噻吩基,苯基或苯氧基取代基本身可任选被 C₁-C₃烷基、羟基、硝基、氨基、卤素和/或 C₁-C₃烷氧基取代;
b) 分离游离氨基酸和未水解的式 II N-酰基衍生物混合物;以及
c) 对未水解材料进行非酶解。