Enantioselective Total Synthesis of the Marine Toxin (−)-Gymnodimine Employing a Barbier-Type Macrocyclization
作者:Ke Kong、Daniel Romo、Changsuk Lee
DOI:10.1002/anie.200903432
日期:2009.9.21
Sea the synthesis: At ambient temperature, tert‐butyllithium promotes a Barbier‐type macrocyclization in the first totalsynthesis of (−)‐gymnodimine (Ts: toluene‐4‐sulfonyl; TBS: tert‐butyldimethylsilyl), a member of the spirocyclic‐imine family of marine toxins. The synthesis also features a vinylogous Mukaiyama aldol process to couple the labile butenolide moiety onto a macrocyclic ketone intermediate