Identification of an ε-Keto Ester Reductase for the Efficient Synthesis of an (<i>R</i>
)-α-Lipoic Acid Precursor
作者:Yu-Jun Zhang、Wen-Xia Zhang、Gao-Wei Zheng、Jian-He Xu
DOI:10.1002/adsc.201500001
日期:2015.5.26
gave ethyl (R)‐8‐chloro‐6‐hydroxyoctanoate, a key precursor for the synthesis of (R)‐α‐lipoic acid, in high space‐time yield (530 g L−1 d−1) and with excellent enantiomeric excess (>99%). This bioprocess was shown to be viable on a 10‐L scale. This method provides a greener and more cost‐effective method for the industrial production of (R)‐α‐lipoic acid.
从副产念珠菌中分离出了一种新型的还原酶(Cp AR2),该酶对ε-酮酯(8-氯-6-氧代辛酸乙酯)具有异常高的活性。共表达Cp AR2和葡萄糖脱氢酶基因的大肠杆菌细胞对8-氯-6-氧代辛酸乙酯的不对称还原产生了(R)-8-氯-6-羟基辛酸乙酯,这是合成(R)-α-的关键前体硫辛酸,时空产率高(530 g L -1 d -1),对映体过量极佳(> 99%)。该生物过程显示出在10 L规模上可行。这种方法为工业生产(R)-α-硫辛酸