A Stereoselective Synthesis of (−)-Viridiofungin A Utilizing a TiCl4-Promoted Asymmetric Multicomponent Reaction
摘要:
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.
A Stereoselective Synthesis of (−)-Viridiofungin A Utilizing a TiCl4-Promoted Asymmetric Multicomponent Reaction
摘要:
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.