Enantioselective total synthesis and absolute configuration of the alleged structure of crassinervic acid
作者:Jyotsna N. Chakor、Lucio Merlini、Sabrina Dallavalle
DOI:10.1016/j.tet.2011.06.015
日期:2011.8
An enantioselective synthesis of the structure reported for the natural antifungal compound, (−)-crassinervic acid (1), has been achieved starting from geraniol and p-hydroxybenzoic acid. The key chirality-inducing step is a Sharpless asymmetric epoxidation of an allylic alcohol, on the basis of which the S configuration can be assigned to the (−) natural enantiomer. The discrepancies between the spectroscopic