A Stereoselective Synthesis of (−)-Viridiofungin A Utilizing a TiCl<sub>4</sub>-Promoted Asymmetric Multicomponent Reaction
作者:Arun K. Ghosh、Jorden Kass
DOI:10.1021/ol203093g
日期:2012.1.20
A stereoselective synthesis of (-)-viridiofungin A is described. The convergent synthesis utilized a unique highly diastereoselective multicomponent reaction between optically active phenyldihydrofuran and an beta-ketoester to provide two chiral centers including a quarternary carbon center in a single step. Other key steps include an acyloxycarbonium ion-mediated tetrahydrofuran ring-opening reaction and a Julia-Kocienski olefination.