作者:Ma, Yaqing、Gao, Shu-Shan、Li, Xin、Wu, Jiafeng、Bao, Jinping、Wang, Luoyi、Cui, Chengsen
DOI:10.1021/acs.orglett.4c02600
日期:——
Less steric ketones exhibited low stereoselectivity toward M5 due to their difficulty in restricting the free rotation of the imine intermediate. An engineered enantio-complementary imine reductase from M5 was obtained with catalytic activity. We identified four key residues that play essential roles in controlling stereoselectivity. Two mutants, I149Y-W234L (up to 99%S ee) and L200M-F260M (up to 99%R
较少空间酮对 M5 表现出较低的立体选择性,因为它们难以限制亚胺中间体的自由旋转。从M5获得了具有催化活性的工程化对映互补亚胺还原酶。我们确定了在控制立体选择性中发挥重要作用的四个关键残基。获得了两个突变体,I149Y-W234L(高达99% S ee )和L200M-F260M(高达99% R ee ),对测试的底物表现出优异的立体选择性,为合成烷基化安非他明提供了有价值的生物催化剂。