17α,21-Dihydroxypregna-4,9-diene-3,20-dione and 17α,21-dihydroxypregna-4-ene-3,20-dione 17 and/or 21 esters of having remarkable antiandrogenic activity, and the processes for the preparation thereof.
17α,21-二羟基
孕酮-4,9-二烯-3,20-二酮和17α,21-二羟基
孕酮-4-烯-3,20-二酮17和/或21酯具有显著的抗雄激素活性,并且还提供了制备这些化合物的方法。