One-Pot Cascade Synthesis of Mono- and Disubstituted Piperidines and Pyrrolidines using Carboxylic Acid Reductase (CAR), ω-Transaminase (ω-TA), and Imine Reductase (IRED) Biocatalysts
作者:Scott P. France、Shahed Hussain、Andrew M. Hill、Lorna J. Hepworth、Roger M. Howard、Keith R. Mulholland、Sabine L. Flitsch、Nicholas J. Turner
DOI:10.1021/acscatal.6b00855
日期:2016.6.3
Access to enantiomerically pure chiral mono- and disubstituted piperidines and pyrrolidines has been achieved using a biocatalytic cascade involving carboxylic acid reductase (CAR), ω-transaminase (ω-TA), and imine reductase (IRED) enzymes. Starting from keto acids or keto aldehydes, substituted piperidine or pyrrolidine frameworks can be generated in high conversion, ee, and de in one pot, with each
使用涉及羧酸还原酶(CAR),ω-转氨酶(ω-TA)和亚胺还原酶(IRED)的生物催化级联反应,可获得对映体纯的手性单和双取代哌啶和吡咯烷。从酮酸或酮醛开始,可以在一锅中以高转化率,ee和de生成高取代度的哌啶或吡咯烷骨架,每种生物催化剂在催化过程中均表现出化学,区域和/或立体选择性。该研究还包括对甲基环取代基位置对IRED催化手性亚胺还原的影响的系统研究。在这些反应中观察到的选择性分析表明,底物与酶控制之间存在有趣的平衡。