A process is disclosed wherein, using either 17a-(3-hydroxypropyl)-6p,7p;15p,16p- dimethylene-5p-androstane-3p,5,17p-triol (II) or 3β,5^ΐΙ^κ^-6β,7β;15β,16β- dimethylene-5β,17α-pregnane-21,17-carbolactone (III) as starting material, through a single-step reaction it is obtained drospirenone (I), a synthetic steroid with progestogenic, antimineralocorticoid and antiandrogenic activity, useful for preparing pharmaceutical compositions with contraceptive action.
本发明揭示了一种过程,使用17a-(3-羟基丙基)-6p,7p;15p,16p-二甲基-5p-雄甾-3p,5,17p-三醇(II)或3β,5^ΐΙ^κ^-6β,7β;15β,16β-二甲基-5β,17α-孕烷-21,17-
碳酸内酯(III)作为起始物,通过单步反应获得
醋酸螺内酯(I),一种具有孕激素、抗矿皮质激素和抗雄激素活性的合成类
固醇,用于制备具有避孕作用的药物组合物。