Synthesis and Pharmacological Evaluation of 4-Halo Progesterone Derivatives as Antiandrogen.
作者:Marisa CABEZA、Alexandra QUIROZ、Eugene BRATOEFF、Ma MURILLO、Elena RAMIREZ、Gregoria FLORES
DOI:10.1248/cpb.47.1232
日期:——
The pharmacological activity of eight pregnane derivatives 17-α acetoxyprogesterone 9, 17-α acetoxy-4, 5-epoxypregnan-3, 20-dione 10, 17-α acetoxy-4-chloro-4-pregnene-3, 20-dione 11, 17-α acetoxy-4-bromo-4-pregnene-3, 20-dione 12, 17-α hydroxy-4-bromo-4-pregnene-3, 20-dione 13, 4-chloro-17-α hydroxy-4-pregnene-3, 20-dione 14, 17-α benzoyloxy-4-bromo-4-pregnene-3, 20-dione 15 and 17-α benzoyloxy-4-chloro-4-pregnene-3, 20-dione 16 was aeter, mined. These compounds were evaluated as antiandrogens on gonadectomized hamster seminal vesicles.The pharmacological data in this study indicate that compounds 15 and 16 having a C-17 benzoyloxy moiety showed the highest antiandrogenic activity as measured by the reduction of the weight of the seminal vesicles, followed by the steroids 11 and 12 (17-α acetoxy group). The free alcohols 13 and 14 exhibited a lower antiandrogenic activity. Apparently, the ester moiety at C-17 is a necessary requirement for the presence of high antiandrogenic activity. shows the inhibitory effect on the conversion of testosterone (T) to DHT, of the above described steroids as measured by the amount of produced DHT 2 expressed as pmoles of DHT/g of protein/h.Steroids 11, 12 and 16 showed a much higher inhibitory activity on the conversion of testosterone (T) to dihydrotestosterone (DHT) than presently used finasteride 3.
八种孕烷衍生物17-α乙酰氧基孕酮9、17-α乙酰氧基-4,5-环氧孕烷-3,20-二酮10、17-α乙酰氧基-4-氯-4-孕烯-3,20-二酮11、17-α乙酰氧基-4-溴-4-孕烯-3,20-二酮12、17-α羟基-4-溴-4-孕烯-3,20-二酮13、4-氯-17-α羟基-4-孕烯-3,20-二酮14、17-α苯甲酰氧基-4-溴-4-孕烯-3,20-二酮15和17-α苯甲酰氧基-4-氯-4-孕烯-3,20-二酮16的药理活性被研究。这些化合物被评估为去势仓鼠精囊的抗雄激素药。本研究的药理数据显示,具有C-17苯甲酰氧基的化合物15和16显示出最高的抗雄激素活性,以精囊重量的减少衡量,其次是类固醇11和12(17-α乙酰氧基)。自由醇13和14显示出较低的抗雄激素活性。显然,C-17处的酯部分是高抗雄激素活性存在的必要条件。显示上述类固醇对睾酮(T)转化为DHT的抑制作用,以产生的DHT 2量表示为pmoles DHT/g蛋白质/小时。类固醇11、12和16对睾酮(T)转化为二氢睾酮(DHT)的抑制活性远高于目前使用的非那雄胺3。