17α,21 -Dihydroxypregna-4,9(11)-diene-3,20-dione and 17α,21-dihydroxypregna-4-ene-3,20-dione 17 and/or 21 esters having remarkable antiandrogenic activity and processes for the preparation thereof.
17α,21-二
羟孕酮-4,9(11)-二烯-3,20-二酮和17α,21-二
羟孕酮-4-烯-3,20-二酮17和/或21酯具有显著的抗雄激素活性,以及制备它们的方法。