PROCESS FOR PRODUCING 4-PREGNENE-3,20-DIONE AND ITS DERIVATIVES
PCT No. PCT/DE91/00620 Sec. 371 Date Jun. 18, 1992 Sec. 102(e) Date Jun. 18, 1992 PCT Filed Jul. 30, 1991 PCT Pub. No. WO92/03571 PCT Pub. Date Mar. 5, 1992.A process for the production of 4-pregnene-3,20-dione and its derivatives of general formula I (I) in which R1 means a hydrogen atom, a fluorin...
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