First Enantioselective Syntheses of (+)- and (−)-Wilforonide by Using Chiral Auxiliaries Derived from the Same Chiral Source
作者:Dan Yang、Ming Xu
DOI:10.1021/ol015722p
日期:2001.6.1
[see structure]. The first enantioselective syntheses of both (+)-wilforonide (>98% ee) and (-)-wilforonide (>98% ee) have been accomplished by employing chiral auxiliaries derived from the same chiral source, (R)-pulegone. The bicyclic skeleton of wilforonide was constructed by using Mn(III)-based oxidative radical cyclization reactions of chiral beta-keto esters. The absolute configuration of natural