In Vivo Active Aldosterone Synthase Inhibitors with Improved Selectivity: Lead Optimization Providing a Series of Pyridine Substituted 3,4-Dihydro-1<i>H</i>-quinolin-2-one Derivatives
作者:Simon Lucas、Ralf Heim、Christina Ries、Katarzyna E. Schewe、Barbara Birk、Rolf W. Hartmann
DOI:10.1021/jm800888q
日期:2008.12.25
Pyridine substituted naphthalenes (e.g., I-III) constitute a class of potent inhibitors of aldosterone synthase (CYP11B2). To overcome the unwanted inhibition of the hepatic enzyme CYP1A2, we aimed at reducing the number of aromatic carbons of these molecules because aromaticity has previously been identified to correlate positively with CYP1A2 inhibition. As hypothesized, inhibitors with a tetrahydronaphthalene
吡啶取代的萘(例如,I-III)构成一类有效的醛固酮合酶(CYP11B2)抑制剂。为克服对肝酶CYP1A2的有害抑制作用,我们旨在减少这些分子的芳族碳原子数,因为先前已确定芳香性与CYP1A2抑制成正相关。如所假设的,具有四氢萘型分子支架的抑制剂(1-11)表现出降低的CYP1A2抑制作用。然而,四氢萘酮9在较高浓度下对人细胞系U-937具有细胞毒性。随之而来的结构优化最终发现了杂芳基取代的3,4-二氢-1H-喹啉-2-酮(12-26),其中12个生物立体异构体为9,在200 microM以下无毒。研究的分子对CYP1A2和多种其他细胞色素P450酶具有高度选择性,并且在体内具有良好的药代动力学特征(例如12种,口服生物利用度为71%)。此外,已证明异喹啉衍生物21可显着降低ACTH刺激大鼠的血浆醛固酮水平。