作者:Eugene Bratoeff、Elena Ramírez、Eugenio Flores、Norma Valencia、Mauricio Sánchez、Ivonne Heuze、Marisa Cabeza
DOI:10.1248/cpb.51.1132
日期:——
The in vitro inhibitory activity of five new progesterone derivatives: 17α-hydroxy-16β-methylpregna-1,4,6-triene-3,20-dione 1; 16β-methyl-17α-toluoyloxypregna-1,4,6-triene-3,20-dione 2; 17α-hydroxy-6-methylenepregn-4-ene-3,20-dione 3; 6-methylene-17α-toluoyloxypregn-4ene-3,20-dione 4 and 17α-(p-bromobenzoyloxy)-6-methylenepregn-4-ene-3,20-dione 5 was determined. These compounds were evaluated as 5α-reductase inhibitors as well as antagonists for the androgen receptor. Compounds 1, 2, 3, 4 and 5 showed the following inhibitory activity for the 5α-reductase enzyme with IC50 values of: 1 (1.65 μM), 2 (10 μM), 3 (19 nM), 4 (100 nM) and 5 (100 nM). The results of this study also showed the effect of increasing concentrations of the novel steroids upon [3H]dihydrotestosterone binding to androgen receptors from male hamster prostate. The Ki values for compounds 1, 2, 3, 4, 5 and dihydrotestosterone showed the following order of affinity for the androgen receptor: 4>5>dihydrotestosterone>2>3>1. The overall data indicated that all synthesized compounds 1, 2, 3, 4 and 5 are inhibitors of the 5α-reductase enzyme present in the hamster prostate. In addition compounds 1, 2, 3, 4 and 5 also presented an affinity for the androgen receptor.
五种新的孕酮衍生物体外抑制活性研究:17α-羟基-16β-甲基孕甾-1,4,6-三烯-3,20-二酮1;16β-甲基-17α-甲苯甲酰氧基孕甾-1,4,6-三烯-3,20-二酮2;17α-羟基-6-亚甲基孕甾-4-烯-3,20-二酮3;6-亚甲基-17α-甲苯甲酰氧基孕甾-4-烯-3,20-二酮4 和 17α-(对溴苯甲酰氧基)-6-亚甲基孕甾-4-烯-3,20-二酮5 的体外抑制活性被测定。这些化合物被评估为 5α-还原酶抑制剂以及雄激素受体的拮抗剂。化合物 1、2、3、4 和 5 显示出对 5α-还原酶的以下抑制活性,IC50 值分别为:1 (1.65 μM),2 (10 μM),3 (19 nM),4 (100 nM) 和 5 (100 nM)。本研究的结果还显示了新型类固醇浓度增加对 [3H] 二氢睾酮与雄性仓鼠前列腺雄激素受体结合的影响。对于雄激素受体,化合物 1、2、3、4、5 和二氢睾酮的 Ki 值显示出以下亲和力顺序:4>5>二氢睾酮>2>3>1。总体数据表明,所有合成的化合物 1、2、3、4 和 5 都是仓鼠前列腺中存在的 5α-还原酶的抑制剂。此外,化合物 1、2、3、4 和 5 也显示出对雄激素受体的亲和力。