Direct Reductive Amination of Ketones: Structure and Activity of<i>S</i>-Selective Imine Reductases from<i>Streptomyces</i>
作者:Tobias Huber、Lisa Schneider、Andreas Präg、Stefan Gerhardt、Oliver Einsle、Michael Müller
DOI:10.1002/cctc.201402218
日期:2014.8
by reduction of an imine precursor derived from the corresponding ketone. Imine reductases, however, show great potential in the reduction of cyclic imines that are stable towards hydrolysis in aqueous reaction media. Here, we report the catalytic activity of two S‐selective imine reductases towards 3,4‐dihydroisoquinolines and 3,4‐dihydro‐β‐carbolines and their activity in the direct reductive amination
手性胺的重要性和结构多样性通过其化学生产的多种非酶法方法得到了很好的证明。本质上,胺的生产是通过氨基转移而不是通过还原衍生自相应酮的亚胺前体来进行的。然而,亚胺还原酶在还原对含水反应介质中的水解稳定的环状亚胺方面显示出巨大潜力。在这里,我们报道了两种S选择性亚胺还原酶对3,4-二氢异喹啉和3,4-二氢-β-咔啉的催化活性,以及它们在酮底物直接还原胺化中的活性。链霉菌(Streptomyces sp。)的酶的晶体结构。GF3546与辅因子NADPH和天然形式的金链霉菌已被分离并纯化至1.9Å的分辨率。