申请人:Schering Aktiengesellschaft
公开号:US04024166A1
公开(公告)日:1977-05-17
Novel process for the preparation of 13.beta.-alkyl-4-gonene-3,17-diones of the formula ##STR1## wherein R.sub.1 is methyl or ethyl, consists of REACTING A 7A.beta.-ALKYL,5,6,7,7A-TETRAHYDROINDANE-1,5-DIONE WITH FORMALDEHYDE AND AN ARYLSULFINIC ACID OR AN ADDUCT OF FORMALDEHYDE AND ARYLSULFINIC ACID TO PRODUCE A TETRAHYDROINDANE DERIVATIVE; Hydrogenating the tetrahydroindane derivative with hydrogen in the presence of a palladium-, platinum-, or rhodium-containing hydrogenation catalyst to produce a perhydroindane derivative; Condensing the perhydroindane derivative in the presence of a proton-accepting agent with a 7,7-alkylenedioxy-3-oxooctanoic acid ester; Treating the product obtained with a strong aqueous base and then heating the product in an inert solvent to produce a 4,5-secosteroid; Hydrogenating the 4,5-secosteroid in the presence of a palladium-, platinum-, rhodium-, or nickel-containing hydrogenation catalyst; and Hydrolyzing and cyclizing the hydrogenated 4,5-secosteroid by treatment with a strong acid.
制备13.beta.-烷基-4-甲基-4-烯-3,17-二酮的新工艺包括将7A.beta.-烷基-5,6,7,7A-四氢茚-1,5-二酮与甲醛和芳基亚磺酸或甲醛和芳基亚磺酸的加合物反应,产生四氢茚衍生物;在钯、铂或铑含量的氢化催化剂存在下,用氢气氢化四氢茚衍生物,产生过氢化茚衍生物;在质子受体剂存在下,将过氢化茚衍生物与7,7-烷二氧基-3-氧代辛酸酯缩合;用强碱处理获得的产物,然后在惰性溶剂中加热产物,生成4,5-环甾体;在钯、铂、铑或镍含量的氢化催化剂存在下,氢化4,5-环甾体;通过用强酸处理水解和环化氢化的4,5-环甾体。