2,2:6,6-diethylen-3-oxo-17alpha-pregn-4-ene-21,17alpha-carbolactones, process for their production & pharmaceutical preparations containing them

摘要

PCT No. PCT/DE87/00208 Sec. 371 Date Feb. 5, 1988 Sec. 102(e) Date Feb. 5, 1988 PCT Filed May 5, 1987 PCT Pub. No. WO87/06937 PCT Pub. Date Nov. 19, 1987.2,2;6,6-diethylene-3-oxo-17alpha-pregn-4-ene-21,17-carbolactones of general formula I, <IMAGE> (I) wherein R1 represents a hydrogen atom or a methyl group, R2 represents a methyl or ethyl group and <IMAGE> process for their production and their pharmaceutical use.