Antiestrogens. 2. Structure-activity studies in a series of 3-aroyl-2-arylbenzo[b]thiophene derivatives leading to [6-hydroxy-2-(4-hydroxyphenyl)benzo[b]thien-3-yl]-[4-[2-(1-piperidinyl)ethoxy]phenyl]methanone hydrochloride (LY 156758), a remarkably effective estrogen antagonist with only minimal intrinsic estrogenicity
作者:Charles D. Jones、Mary G. Jevnikar、Andrew J. Pike、Mary K. Peters、Larry J. Black、Allen R. Thompson、Julie F. Falcone、James A. Clemens
DOI:10.1021/jm00374a021
日期:1984.8
growth-stimulating action of estradiol on the immature rat uterus. Seemingly minor changes in the side-chain amine moiety were found to have profound effects on the ability of the compounds to antagonize estradiol. Analogues having basic side chains containing cyclic (pyrrolidine, piperidine, and hexamethyleneamine) moieties were found to have less intrinsic estrogenicity and to antagonize estradiol action more completely
为了制备非甾体类抗雌激素,其显示出比目前可用的更高的拮抗作用和更低的内在雌激素性,合成了一系列3-芳基-2-芳基苯并[b]噻吩衍生物。这些化合物的制备方法是:将适当的O-保护的2-芳基苯并[b]噻吩核与带有碱性侧链的苯甲酰氯进行Friedel-Crafts芳基化反应,然后去除保护基,以提供既包含羟基又包含碱性侧基的所需化合物。链功能。发现一种特别有用的裂解芳基甲氧基醚而不除去分子中其他地方的(二烷基氨基)乙氧基侧链官能度的方法是AlCl 3 / EtSH。测试了苯并噻吩衍生物抑制雌二醇对未成熟大鼠子宫的生长刺激作用的能力。看来侧链胺部分的微小变化对化合物拮抗雌二醇的能力有深远的影响。发现具有包含环(吡咯烷,哌啶和六亚甲基胺)部分的碱性侧链的类似物具有比其非环状对应物更少的固有雌激素性并且更完全地拮抗雌二醇的作用。该系列中最有效的抗雌激素化合物,化合物44,[6-羟基-2-(4-羟基苯基)苯并[b]噻吩-3-基]-[4-