In order to examine the antiandrogenic activity, a series of 16β-substituted-17β-hydroxysteroids (9 and 16) were synthesized by stereoselective introduction of β-substituents at position 16 of steroids. The corresponding 6-chloro-16β-substituted-17β-hydroxysteroids (20 and 28) and 1, 2α-methylene derivative (36) were also prepared. Among these new steroids synthesized, 17β-hydroxy-16β-ethylestr-4-en-3-one (9b : TSAA-291) was found to have the most potent antiandrogenic activity with very weak side effects and also found to be useful for a treatment of the benign prostatic hypertrophy.
为了研究其抗雄激素活性,通过在类
固醇的第 16 位立体选择性地引入 β 取代基,合成了一系列 16β 取代基-17β-羟基类
固醇(9 和 16)。此外,还制备了相应的 6-
氯-16β-取代-17β-羟基类
固醇(20 和 28)以及 1,2α-亚
甲基衍
生物(36)。在合成的这些新类
固醇中,17β-羟基-16β-乙基
雌甾-4-
烯-3-
酮(9b:
TSAA-291)具有最强的抗雄激素活性,且副作用极小,还可用于治疗良性前列腺肥大。