在过去的几年中,光催化的C CC偶联已经发展成为一种完善的方法,特别是用于芳基取代的四氢异喹啉衍生物的修饰。但是,到目前为止,该反应主要限于使用强亲核试剂,如硝基烷,氰化物,烯胺,膦酸酯和丙二酸酯。在该出版物中,我们介绍了这种方法的扩展,适用于较弱的亲核试剂,即烯丙基锡烷,烯丙基硅烷和烯丙基硼烷。因此,发明了一种非常简单的方案,使用非均质中孔石墨氮化碳(mpg-C 3 N 4)作为催化剂,空气作为氧化剂,从而为多种基材提供了高收率。
Enantioselective Total Synthesis of (+)-Dihydro-β-erythroidine
作者:Sebastian Clementson、Mikkel Jessing、Henrik Pedersen、Paulo Vital、Jesper L. Kristensen
DOI:10.1021/jacs.9b04626
日期:2019.6.5
Erythrina alkaloids represent a rich source of complex polycyclic, bioactive natural products. In addition to their sedative and hypotensive effect, their curare-like activity and structural framework have made them attractive targets for synthetic and medicinal chemists. (+)-Dihydro-beta-erythroidine (DH beta E), the most potent nicotine acetylcholine receptor antagonist (nAChR) of the Erythrina family, is synthesized for the first time in 13 steps from commercially available material.