This invention describes the new 17-difluoromethylene-estratrienes of general formula I ##STR1## in which R.sup.1 is a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group, R.sup.5 is a methyl or ethyl group, and R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.10 alkyl group in .alpha.- or .beta.-position, R.sup.3 is a hydrogen atom or a C.sub.1 -C.sub.10 alkyloxy group in .alpha.- or .beta.-position, R.sup.4 is a hydrogen atom in .alpha.- or .beta.-position, and A, B, D, E and G each is a hydrogen atom, and optionally at least one of substituent pairs G and R.sup.2, R.sup.2 and R.sup.4, R.sup.4 and A, A and R.sup.3, B and D, D and E is a double bond.
该发明涉及一种新的17-二
氟甲基-雌
三烯类化合物,其通式为I ##STR1## 其中R1为氢原子或C1-C10烷基,R5为甲基或乙基基团,R2为α-或β-位置的氢原子或C1-C10烷基,R3为α-或β-位置的氢原子或C1-C10烷氧基基团,R4为α-或β-位置的氢原子,A、B、D、E和G分别为氢原子,选修地,G和R2、R2和R4、R4和A、A和R3、B和D、D和E中至少一对取代基为双键。