Novel “Protecting Group-Dependent” Alkylation−RCM Strategy to Medium-Sized Oxacycles: First Total Synthesis of (−)-Isoprelaurefucin
作者:Hyunjoo Lee、Hyoungsu Kim、Taehyun Yoon、Byungsook Kim、Sanghee Kim、Hee-Doo Kim、Deukjoon Kim
DOI:10.1021/jo050974f
日期:2005.10.1
A novel “protecting group-dependent” alkylation strategy was developed for complementary diastereoselective syntheses of α,α‘-syn- and α,α‘-anti-bis-alkenes 2 and 3, which represent ring-closing metathesis (RCM) substrates for medium-sized oxacycles. This principle has been applied to a stereoselective and concise totalsynthesis of (−)-isoprelaurefucin (4) in 14 steps in 12% overall yield from known