申请人:The Board of Trustees of the Leland Stanford Junior University
公开号:US04117234A1
公开(公告)日:1978-09-26
Estrogenic steroids are synthesized by combining under conditions favoring the formation of a trans-olefin, a .gamma.-arylpropanal with a 5,5,8,8-tetraalkoxy Wittig reagent. After hydrolysis of the gem-diethers, the resulting dioxo is internally condensed to form a cyclopentenone. The ketone is reduced to an oxy group and the resulting 2-(6'-arylhex-3'-enyl-1)cyclopent-2-en-1-ol or derivative thereof is cyclized to the .DELTA..sup.13,17 -estrene, preferably 17-alkyl-.DELTA..sup.13,17 -estrene with the A ring aromatized. After epoxidation, the 17-alkyl derivative is rearranged to form the 13-alkyl-1,3,5(10)-estratien-17-one. New compounds are provided as intermediates and final products.
雌激素类固醇是通过在有利于形成反式烯烃的条件下,将γ-芳基丙醛与5,5,8,8-四烷氧基威特格试剂结合合成的。在双醚水解后,得到的二酮内部缩合形成环戊酮。酮被还原为羟基,生成的2-(6'-芳基己-3'-烯基-1)环戊-2-烯-1-醇或其衍生物被环化为Δ13,17-雌烯,最好是17-烷基-Δ13,17-雌烯,其中A环芳构化。经过环氧化后,17-烷基衍生物被重排形成13-烷基-1,3,5(10)-雌三烯-17-酮。提供了新的中间体和最终产物。