第 42 卷第 3 期Vol. 42 No. 3
2012 年 6 月Jun 2012

所属栏目:医药及中间体

生物催化不对称还原制备(R)-2-羟基-4-苯基丁酸
苏金环,郭 皓,曾聪明,文 军* (尚科生物医药(上海)有限公司,上海201319)
摘 要:以克隆表达的乳酸脱氢酶(D-LDH)为催化剂来还原前手性化合物2-羰基-4-苯基丁酸(OPBA),制备重要的手性中间体(R)-2-羟基-4-苯基丁酸(R-HPBA)。通过考察影响反应的各因素,确定了反应pH、初始底物浓度,酶加量及NAD+加量等参数。最后,以分批补料的方式进行产物制备,4 h内即可完全转化100 mmol/L底物。经验证,所得产物的构型完全正确,且e.e值>99.9%。
关键词:不对称还原;(R)-2-羟基-4-苯基丁酸;乳酸脱氢酶;分批补料
中图分类号:TQ463  文献标识码:A  文章编号:1009-9212(2012)03-0035-04
Preparation of(R)-2-Hydroxy-4-phenyl-butyric Acid by Biocatalytic Asymmetric Reduction
SU Jin-huan,GUO Hao,ZENG Cong-ming,WEN Jun* (Syncozymes(Shanghai)Co.,Shanghai 201319,China)
Abstract:The important chiral intermediate(R)-2-hydroxy-4-phenyl butyric acid(R-HPBA)was prepared from prochiral compound,using lactate dehydrogenase(D-LDH)obtained by cloning and expression as the biocatalyst. The affecting factors such as pH,initial substrate concentration,enzyme loading,and NAD+ amount were investigated. Finally,the product was prepared from 100 mmol/L substrate in 4 h by a fed-batch process. The configuration of the target product obtained therein was confirmed,and the e.e > 99.9%.
Key words:asymmetric reduction;(R)-2-hydroxy-4-phenyl butyric acid;lactate dehydrogenase;fed-batch
作者简介:苏金环(1974-),女,黑龙江人,博士,研究方向:生物催化。(E-mail:jhsu@syncorelabs.com)
联 系 人:文 军,博士,研究方向:有机化学。(E-mail:jwen@syncorelabs.com)
收稿日期:2012-03-30