Microbial Deracemization of α-Substituted Carboxylic Acids: Substrate Specificity and Mechanistic Investigation
作者:Dai-ichiro Kato、Satoshi Mitsuda、Hiromichi Ohta
DOI:10.1021/jo034253x
日期:2003.9.1
A new enzymatic method for the preparation of optically active alpha-substituted carboxylic acids is reported. This technique is called deracemization reaction, which provides us with a route to obtain the enantiomerically pure compounds, theoretically in 100% yield starting from the racemic mixture. This means that the synthesis of a racemate is almost equal to the synthesis of the optically active
报道了一种用于制备旋光的α-取代的羧酸的新的酶促方法。这项技术称为脱硝反应,它为我们提供了从外消旋混合物开始,理论上以100%的收率获得对映体纯化合物的途径。这意味着外消旋体的合成几乎与旋光化合物的合成相同,并且该概念与不对称合成中通常被接受的概念完全不同。使用不断增长的诺卡氏夜蛾诺卡氏菌JCM3208的细胞系统,可以使2-芳基-和2-芳基氧基丙酸的外消旋物顺利脱硫,并以高化学收率(> 50%)回收富含(R)-形式的产物。此外,使用旋光性起始化合物和氘代衍生物以及抑制剂,