A new tris-annulation reagent prepared from a butadiene telomer, and its application to steroid synthesis
作者:Jiro Tsuji、Yuichi Kobayashi、Takashi Takahashi
DOI:10.1016/s0040-4039(00)71439-0
日期:1980.1
Reaction of 1,7-octadien-3-one with dimethylmalonate, followed by the reduction of the ketone produced dimethyl (3-hydroxy-7-octenyl)malonate, which was converted to 9-decen-5-olide after hydrolysis and decarboxylation. Reaction of vinylmagnesium chloride with the lactone and the subsequent acylation afforded 7-acetoxy-1,11-dodecadien-3-one. This is a new tris-annulation reagent. (±)-D-homo-19-no