Chiral Aromatase and Dual Aromatase−Steroid Sulfatase Inhibitors from the Letrozole Template: Synthesis, Absolute Configuration, and In Vitro Activity
作者:Paul M. Wood、L. W. Lawrence Woo、Jean-Robert Labrosse、Melanie N. Trusselle、Sergio Abbate、Giovanna Longhi、Ettore Castiglioni、France Lebon、Atul Purohit、Michael J. Reed、Barry V. L. Potter
DOI:10.1021/jm800168s
日期:2008.7.1
To explore aromatase inhibition and to broaden the structural diversity of dual aromatase-sulfatase inhibitors (DASIs), we introduced the steroid sulfatase (STS) inhibitory pharmacophore to letrozole. Letrozole derivatives were prepared bearing bis-sulfamates or mono-sulfamates with or without adjacent substituents. The most potent of the achiral and racemic aromatase inhibitor was 40 (IC 50 = 3.0
为了探索芳香酶的抑制作用并拓宽双重芳香酶-硫酸酯酶抑制剂(DASIs)的结构多样性,我们将甾族硫酸酯酶(STS)抑制药效团引入了来曲唑。制备带有或不具有相邻取代基的双氨基磺酸盐或单氨基磺酸盐的来曲唑衍生物。最有效的非手性和外消旋芳香酶抑制剂为40(IC 50 = 3.0 nM)。通过手性HPLC分离其酚类前体39,并使用振动和电子圆二色性与预测光谱的计算相结合来确定每种对映体的绝对构型。在两种对映异构体中,(R)-苯酚(39a)是最有效的芳香化酶抑制剂(IC 50 = 0.6 nM,与来曲唑相当),而(S)-氨基磺酸盐(40b)最有效地抑制STS(IC 50 = 553 nM)。