Steroidal Spiro-.gamma.-lactones That Inhibit 17.beta.-Hydroxysteroid Dehydrogenase Activity in Human Placental Microsomes
作者:Kay Mane Sam、Serge Auger、Van Luu-The、Donald Poirier
DOI:10.1021/jm00022a018
日期:1995.10
effects on 17 beta-HSD activity in the human placenta microsomes that catalyze the interconversion of androgens and estrogens. To void the interaction of the cytosolic 17 beta-HSD activity that is specific for the interconversion of estrone and estradiol, we used 4-androstenedione as substrate. Analysis of the inhibitory effect exerted by these analogs on microsomal 17 beta-HSD activity indicates that spiro-gamma-lactones
已知重要的酶17β-羟基类固醇脱氢酶(17β-HSD)调节生物活性类固醇(即雄激素和雌激素)的细胞内水平。为了开发有效的17β-HSD抑制剂以降低活性类固醇的水平,我们发现类固醇螺-γ-内酯会抑制17β-HSD活性。在本报告中,我们描述了包含甾体C-18或C-19核的11个螺-γ-内酯类似物的合成,并比较了它们对人类胎盘微粒体中17β-HSD活性的相对抑制作用,该活性催化雄激素的相互转化。和雌激素。为了使特异性针对雌酮和雌二醇相互转化的胞质17β-HSD活性相互作用无效,我们使用4-雄烯二酮作为底物。这些类似物对微粒体17β-HSD活性的抑制作用分析表明,含有C-18核的螺-γ-内酯比C-19核类似物更有效。酚类螺旋-γ-内酯7(3-羟基-19-nor-17α-pregna-1,3,5(10)-三烯21,17-carbolactone)的抑制效果最佳,IC50值值为0.27 microM,