A new approach toward the synthesis of C,D-cis coupled steroid and C,D-cis coupled d-homosteroid skeletons
作者:Svetlana Dratch、Tanya Charnikhova、Florence C.E Sarabèr、Ben J.M Jansen、Aede de Groot
DOI:10.1016/s0040-4020(03)00629-x
日期:2003.6
procedure has been developed for the synthesis of C,D-cis coupled steroid and d-homo steroid skeletons. A Mukaiyama reaction with transfer of the silyl group of the starting silylenolether to the enol of the adduct followed by addition of vinyl magnesium bromide to the unprotected carbonyl group leads to adducts which can be cyclized with ZnBr2. The synthesis of functionalized steroid skeletons in overall