An Enantioselective Total Synthesis of (+)- and (−)-Saudin. Determination of the Absolute Configuration
作者:Robert K. Boeckman,、Maria del Rosario Rico Ferreira、Lorna H. Mitchell、Pengcheng Shao
DOI:10.1021/ja017194i
日期:2002.1.1
A short efficient enantioselective synthesis of both (+)- and (-)-saudin, a naturally occurring hypoglycemic diterpene, is described. This synthesis establishes the absoluteconfiguration of natural (-)-saudin for the first time. The key steps include the enantioselective construction of a dimethyl Hagemann's ester by an asymmetric Michael reaction and establishment of the key 1,3 disposed quaternary