Synthetic Studies on Daphnicyclidin A: Enantiocontrolled Construction of the BCD Ring System
作者:Shuhei Ikeda、Masatoshi Shibuya、Naoki Kanoh、Yoshiharu Iwabuchi
DOI:10.1021/ol9003405
日期:2009.4.16
An enantiocontrolled entry to the tricyclic core of daphnicyclidin A with five chiral centers including an all-carbon quaternary center is reported. The synthesis features a highly diastereoselective conjugate addition of nitromethane, an Ireland-Claisen rearrangement, and a tandem acyliminium/Mannich-type reaction.