Biocatalytic Routes to Enantiomerically Enriched Dibenz[<i>c</i>
,<i>e</i>
]azepines
作者:Scott P. France、Godwin A. Aleku、Mahima Sharma、Juan Mangas-Sanchez、Roger M. Howard、Jeremy Steflik、Rajesh Kumar、Ralph W. Adams、Iustina Slabu、Robert Crook、Gideon Grogan、Timothy W. Wallace、Nicholas J. Turner
DOI:10.1002/anie.201708453
日期:2017.12.4
dibenz[c,e]azepines has highlighted the use of imine reductase (IRED) and ω‐transaminase (ω‐TA) biocatalysts to establish the key stereocentres of these molecules. Several enantiocomplementary IREDs were identified for the synthesis of (R)‐ and (S)‐5‐methyl‐6,7‐dihydro‐5H‐dibenz[c,e]azepine with excellent enantioselectivity, by reduction of the parent imines. Crystallographic evidence suggests that IREDs
苯并[c,e] a庚因的生物催化逆合成分析强调了使用亚胺还原酶(IRED)和ω-转氨酶(ω-TA)生物催化剂来建立这些分子的关键立体中心。鉴定了几种对映体互补的IRED,以合成(R)-和(S)-5-甲基-6,7-二氢-5 H通过还原母体亚胺,具有极好的对映选择性的-dibenz [c,e] azepine。晶体学证据表明,IREDs可能能够结合亚胺底物的一个构象异构体,从而在还原后直接生成主要产物的构象异构体。ω-TA生物催化剂也已成功用于生产对映体纯的1-(2-溴苯基)乙-1-胺,从而为将手性安装到苯并[c,e] a庚烷骨架中提供了一条正交途径。