OPTICALLY ACTIVE ALPHA-SUBSTITUTED CARBOXYLIC ACID DERIVATIVE AND PROCESS FOR PRODUCING THE SAME
申请人:MITSUBISHI RAYON CO., LTD.
公开号:EP0765857A1
公开(公告)日:1997-04-02
The present invention relates to an optically active α-substituted carboxylic acid derivative represented by the general formula (I):
(wherein R1 is a hydroxyl group,
R2 is a methyl group or a chlorine atom; R3 is a hydrogen atom or an alkyl group with 1-6 carbon atoms; n is an integer of 1 or 2; and * represents an asymmetric carbon atom, provided that R2 is a chlorine atom when R1 is a hydroxyl group);
and a method for producing the optically active α-substituted carboxylic acid derivative represented by the general formula (I) and antipodes thereof using a culture, cells or a material obtainable from cells of a microorganism having an ability to asymmetrically hydrolyze ester bonds. The optically active α-substituted carboxylic acid derivatives and antipodes thereof provided by the invention are useful as raw materials for various liquid crystals and as synthetic intermediates for various optically active medicines or agricultural chemicals.
本发明涉及一种具有光学活性的α-取代的羧酸衍生物,由通式(I)代表:
(其中 R1 是羟基、
R2为甲基或氯原子;R3为氢原子或含有1-6个碳原子的烷基;n为1或2的整数;*代表不对称碳原子,但当R1为羟基时,R2为氯原子);
以及一种利用具有不对称水解酯键能力的微生物的培养物、细胞或可从细胞获得的材料生产通式(I)代表的光学活性α-取代的羧酸衍生物及其反式的方法。本发明提供的具有光学活性的 α-取代羧酸衍生物及其对映体可用作各种液晶的原料和各种具有光学活性的药物或农药的合成中间体。