Process for producing optically active alfa-substituted organic acid and microorganism and enzyme used therefor
申请人:Asahi Kasei Kogyo Kabushiki Kaisha
公开号:EP0348901A2
公开(公告)日:1990-01-03
A process for producing an optically active α-substituted organic acid represented by formula (II), comprising the steps of (a) treating a racemic α-substituted nitrile or amide represented by formula (I) with a microorganism selected from the group consisting of the microorganisms of genuses Alcaligenes, Pseudomonas, Rhodopseudomonas, Corynebacterium, Acinetobacter, Bacillus, Mycobacterium, Rhodococcus and Candida, or preparations thereof; and (b) recovering the resulting optically active α-substituted organic acid represented by formula (II):
wherein R₁ and R₂ each represent a halogen atom, a hydroxyl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted aryloxy group or a substituted or unsubstituted heterocyclic group with the proviso that R₁ and R₂ are different from each other; and X represents a nitrile group or an amido group,
wherein R₁ and R₂ are as defined above.
一种生产由式(II)代表的光学活性 α-取代的有机酸的工艺,包括以下步骤 (a) 用一种微生物处理由式(I)代表的外消旋 α-取代的腈或酰胺,该微生物选自由阿尔卡利根属、假单胞菌属、红假单胞菌属、棒状杆菌属、针状杆菌属、芽孢杆菌属、分枝杆菌属、红球菌属和白色念珠菌属的微生物或其制剂组成的组;(b) 回收所得到的具有光学活性的 α-取代的有机酸,其代表式为 (II):
其中 R₁ 和 R₂ 各自代表卤原子、羟基、取代或未取代的烷基、取代或未取代的环烷基、取代或未取代的烷氧基、取代或未取代的芳基、取代或未取代的芳氧基或取代或未取代的杂环基,但 R₁ 和 R₂ 彼此不同;X 代表腈基或氨基、
其中 R₁ 和 R₂ 如上文所定义。