Vinyl fluoride as a mimic of the ‘intermediate’ enol form in the 5α-reductase transformation: Synthesis and in vitro activity of (N-1′,1′-Dimethylethyl)-3-haloandrost-3,5-diene-17β-carboxamides
作者:Xun Li、Shankar M. Singh、Van Luu-The、Jean Côté、Sylvie Laplante、Fernand Labrie
DOI:10.1016/0968-0896(95)00160-3
日期:1996.1
beta-carboxylic chloride/bromide (6/7), which were obtained from pregnenolone. In comparison with finasteride and 4-MA, compounds 8-11 showed very weak inhibitory activity ( < or = 10% inhibition) on human type I 5 alpha-reductase (transfected 293 cells) at 100 and 1000 nM concentrations. Against the type II enzyme, chloro compounds 8 and 9, and bromo 10 had no effect at 100 nM concentration, however, they were
(N-1',1'-二甲基乙基)-3-卤代雄酮-3,5-二烯-17β-羧酰胺(9-11)和甲酯8由3-氯/溴代雄酮-3,5-二烯制备得自孕烯醇酮的-17β-羧酰氯/溴化物(6/7)。与非那雄胺和4-MA相比,化合物8-11在100和1000 nM浓度下对人I 5型α-还原酶(转染的293细胞)表现出非常弱的抑制活性(≤10%抑制)。对于II型酶,氯化合物8和9以及溴10在100 nM浓度下没有作用,但是,它们是II型酶的弱抑制剂(6.0%<抑制作用<30%),浓度较高。用3-乙烯基氟类似物11观察到最佳活性(IC50 = 480 nM)。