The invention relates to compounds of the formula :
wherein :
each of R1 and R2 is hydrogen or a (C1-C6)alkyl, R1 and R2 being not simultaneously hydrogen ;
R3 is hydrogen, a (C1-C6)alkyl or a (C1-C6)alkoxy ;
R4 is hydrogen, a (C1-C6)alkyl or a group -COR6 where R6 is a (C1-C6)alkyl ;
R5 is hydrogen or a (C1-C6)alkyl ;
n is zero or one ;
X is oxygen or an hydroxyimino group ; and
the dotted line may represent a double bond ; provided that when n = 0, R3 is hydrogen only if both R1 and R2 are a (C1-C6)alkyl,
and to pharmaceutical compositions containing them.
These compounds are potent progestogens which are devoid of residual androgenic activity.
本发明涉及以下式的化合物:其中:R1和R2中的每一个为氢或(C1-C6)烷基,R1和R2不同时为氢;R3为氢、(C1-C6)烷基或(C1-C6)烷氧基;R4为氢、(C1-C6)烷基或基团-COR6,其中R6为(C1-C6)烷基;R5为氢或(C1-C6)烷基;n为零或一;X为氧或羟
亚胺基;虚线可以表示双键;只有当n = 0时,当R1和R2都为(C1-C6)烷基时,R3才为氢。本发明还涉及含有这些化合物的药物组合物。这些化合物是强效孕激素,不具有残留的雄激素活性。