A biological process for predominantly producing an optically active α-hydroxycarboxylic acid having a phenyl group directly from a racemic α-hydroxynitrile or a mixture of an aldehyde corresponding to the nitrile and prussic acid as a substrate is disclosed, comprising reacting a microorganism belonging to the genus Rhodococcus, Alcaligenes, Brevibacterium or Pseudomonas with the substrate in a neutral to basic aqueous medium. A desired optically active α-hydroxycarboxylic acid having a phenyl group can be obtained quantitatively at a high optical purity.
本发明公开了一种以外消旋α-羟基腈或对应于该腈的醛与普鲁士酸的混合物为底物,直接生产具有苯基的光学活性α-羟基
羧酸的
生物工艺,该工艺包括在中性至碱性
水介质中,使属于Rhodococcus、Alcaligenes、Brevibacterium或Pseudomonas属的微
生物与底物反应。可定量获得光学纯度高、具有苯基的所需光学活性 α-羟基
羧酸。