Lead Optimization Generates CYP11B1 Inhibitors of Pyridylmethyl Isoxazole Type with Improved Pharmacological Profile for the Treatment of Cushing’s Disease
作者:Juliette Emmerich、Chris J. van Koppen、Jens L. Burkhart、Qingzhong Hu、Lorenz Siebenbürger、Carsten Boerger、Claudia Scheuer、Matthias W. Laschke、Michael D. Menger、Rolf W. Hartmann
DOI:10.1021/acs.jmedchem.7b00437
日期:2017.6.22
Cushing’s disease, characterized by elevated plasma cortisol levels, can be controlled by inhibition of 11β-hydroxylase (CYP11B1). The previously identified selective and potent CYP11B1 inhibitor 5-((5-methylpyridin-3-yl)methyl)-2-phenylpyridine Ref 7 (IC50= 2 nM) exhibited promutagenic potential as well as very low oral bioavailability in rats (F = 2%) and was therefore modified to overcome these
库欣氏病的特点是血浆皮质醇水平升高,可以通过抑制11β-羟化酶(CYP11B1)来控制。先前确定的选择性和有效的CYP11B1抑制剂5-(((5-甲基吡啶基-3-基)甲基)-2-苯基吡啶Ref 7(IC 50 = 2 nM)表现出致突变的潜力以及在大鼠中的口服生物利用度非常低(F = 2%),因此进行了修改以克服这些缺点。成功的铅优化导致相似且有效的选择性5-((5-甲氧基吡啶-3-基)甲基)-3-苯基异恶唑25(IC 50 = 2 nM,选择性比CYP11B2高14倍),显示出优异的药理学特性,没有诱变潜力。此外,化合物25抑制大鼠CYP11B1(IC 50 = 2μM)并显示出较高的口服生物利用度(F = 50%)和大鼠中足够的血浆浓度,为原理验证研究提供了极好的起点。