申请人:Schering Corporation
公开号:US03968132A1
公开(公告)日:1976-07-06
(17R)-Spiro-[androstane-17,1'-cyclobutan]-2'-ones are prepared by the reaction of a 17-oxo androstane, wherein all other ketones are blocked, with a cyclopropylarylsulfide or with a cyclopropylarylsulfonium salt having a non-nucleophilic anion, in an organic solvent together with a strong base, followed by reaction in situ of the intermediate thereby formed with aqueous acid or water. Some (17R)-spiro-[androstan-17,1'-cyclobutan]-2'-ones are useful as intermediates in preparing (17R)-spiro-[3-oxo-4-androstene-17,1'-cyclobutan]-2'-ones which are aldosterone antagonists. Additionally, (17R)-spiro-[androstane-17,1'-cyclobutan]-2'-ones are useful as intermediates in preparing known 17.alpha.-pregnane-21,17.beta.-carbolactones, valuable aldosterone blocking agents.
(17R)-螺[雄甾烷-17,1'-环丁]-2'-酮是通过17-酮雄甾烷与环丙基芳基硫醚或具有非亲核阴离子的环丙基芳基硫鎓盐反应制备的,其中所有其他酮被阻断,在有机溶剂中与强碱一起反应,随后与所形成的中间体在原位反应与水溶酸或水。一些(17R)-螺[雄甾烷-17,1'-环丁]-2'-酮可用作制备醛固酮拮抗剂的中间体。此外,(17R)-螺[雄甾烷-17,1'-环丁]-2'-酮可用作制备已知的17α-孕烷-21,17β-碳内酯,有价值的醛固酮阻断剂的中间体。