C - Chemistry – Metallurgy – 07 – J
Patent
C - Chemistry, Metallurgy
07
J
C07J 21/00 (2006.01) C07J 1/00 (2006.01) C07J 31/00 (2006.01) C07J 33/00 (2006.01) C07J 41/00 (2006.01) C07J 43/00 (2006.01)
Patent
CA 2084314
Compounds of general formula (III), in which A and B together stand for an additional bond and D stands for a hydrogen atom or B and D together stand for an additional bond and A stands for a hydrogen atom and Y and Y' stand for protected keto groups arid R1 and R4 have the meaning given in the description, and a process for producing them are described. The new compounds are useful starting products for producing compounds of general formula (I), in which X, R1, R2, R3 and R4 have the meaning given in the description, with a strong antigestagenic activity.
Cleve Arwed
Neef Guenter
Ottow Eckhard
Wiechert Rudolf
Marks & Clerk
Schering Aktiengesellschaft
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