New synthesis of a chiral steroid cd-ring synthon by means of enantioselective double Michael addition
作者:Takashi Takahashi、Hiroshi Okumoto、Jiro Tsuji
DOI:10.1016/s0040-4039(01)90077-2
日期:1984.1
A new synthetic method of (+)-(1R)-acetyl-(7aR)-methyl-4-hydroinden-5-one (2) by highly enantioselective double Michael addition involving alkenylcopper-phosphine complex, 3-trimethylsilylbutenone and 2-methyl-2-cyclo-pentenone is presented.