Compounds of the general formula ##STR1## in which R' is hydrogen or a methyl radical; R is a hydroxyl, acetoxy, arylaminocarbonyloxy, alkylaminocarbonyloxy radical; Z is hydrogen or a lower alkyl, or R and Z together are oxygen. These compounds exhibit a very favorable separation of desirable contraceptive and undesirable uterine and antigonadotrophic properties.
通式为##STR1##的化合物中,其中R'是氢或甲基基团;R是羟基、乙酰氧基、芳基
氨基甲酰氧基、烷基
氨基甲酰氧基基团;Z是氢或低碳烷基,或者R和Z一起是氧。这些化合物表现出良好的避孕和不良子宫和抗性腺激素作用的分离效果。