作者:Zhi-Yuan Wang、Li-Sheng Xu、Ji Gao、Jun-Zhong Liu、Hong-Juan Zhang、Qian Liu、Qing-Cai Jiao
DOI:10.1016/j.tetasy.2012.11.006
日期:2012.12
O-Methyl-l-serine and its derivatives are relevant in peptide synthesis (food, pharmaceuticals, and cosmetics). Optically active O-methyl-l-serine was prepared using a chemoenzymatic method from inexpensive acrylamide. Our method is a four step reaction sequence; bromination of acrylamide; etherification of dibromopropionamide; ammonolysis of α-bromo-β-methoxy-propionamide; enzymatic racemization;
O-甲基-1-丝氨酸及其衍生物与肽合成有关(食品,药品和化妆品)。使用化学酶法由廉价的丙烯酰胺制备旋光的O-甲基-1-丝氨酸。我们的方法是一个四步反应序列。丙烯酰胺的溴化;二溴丙酰胺的醚化;α-溴-β-甲氧基丙酰胺的氨解;酶外消旋作用;和选择性水解。由α-氨基-ε-己内酰胺消旋酶(Locus,E01594)和肽酶B(Locus,D84499)组成的双酶催化剂体系已成功用于生产对映体纯的O-甲基-1-丝氨酸(ee > 99.9% )(> 99.7%)。光学活性O获得-甲基-1-丝氨酸,总产率为82.4%。