四种生物碱:(R)-(+)-地平A 5,(R)-(+)-八氢吲哚并[2,3- a ]喹唑烷8,(R)-(+)-毒品19和(R)-(通过前手性烯胺(亚胺盐)的不对称转移氢化反应制备了+)-去溴阿糖胞苷22。根据在(+)-(R)-叔存在下测得的1 H NMR光谱确定分离出的生物碱的对映体过量-丁基苯基膦硫基(硒)酸作为手性溶剂。在所有情况下,通过X射线晶体学证实了新产生的立体碳原子上的绝对构型。
Asymmetric Synthesis of Fused-Ring Tetrahydroisoquinolines and Tetrahydro-β-carbolines from 2-Arylethylamines via a Chemoenzymatic Approach
作者:Linsong Yang、Jianjiong Li、Zefei Xu、Peiyuan Yao、Qiaqing Wu、Dunming Zhu、Yanhe Ma
DOI:10.1021/acs.orglett.2c02466
日期:2022.9.16
While chiral fused-ring tetrahydroisoquinoline (THIQ) and tetrahydro-β-carboline (THβC) scaffolds have attracted considerable interest due to their wide spectrum of biological activities, the synthesis of optically pure chiral fused-ring THIQs and THβCs remains a challenging task. Herein, a group of active imine reductases were identified to convert the imine precursors into the corresponding enantiocomplementary