Nitrile in the Hole: Discovery of a Small Auxiliary Pocket in Neuronal Nitric Oxide Synthase Leading to the Development of Potent and Selective 2-Aminoquinoline Inhibitors
作者:Maris A. Cinelli、Huiying Li、Georges Chreifi、Thomas L. Poulos、Richard B. Silverman
DOI:10.1021/acs.jmedchem.7b00259
日期:2017.5.11
Neuronal nitric oxide synthase (nNOS) inhibition is a promising strategy to treat neurodegenerative disorders, but the development of nNOS inhibitors is often hindered by poor pharmacokinetics. We previously developed a class of membrane-permeable 2-aminoquinoline inhibitors and later rearranged the scaffold to decrease off-target binding. However, the resulting compounds had decreased permeability
抑制神经元一氧化氮合酶(nNOS)是治疗神经退行性疾病的一种有前途的策略,但是不良的药代动力学通常会阻碍nNOS抑制剂的发展。我们先前开发了一类可透过膜的2-氨基喹啉抑制剂,后来重新排列了支架以减少脱靶结合。但是,与人eNOS相比,所得化合物的通透性降低,人nNOS活性低,选择性低。在这项研究中,合成了5-取代的苯基醚连接的氨基喹啉及其衍生物,并针对纯化的NOS同工型进行了分析。5-氰基化合物是特别有效的和选择性的大鼠和人类nNOS抑制剂。活性和选择性是由氰基与nNOS中新的辅助口袋的结合所介导的。通过喹啉的甲基化和引入简单的手性部分可增强效价,从而产生疏水和辅助口袋效应的组合,从而产生高(约500倍)n / e选择性。重要的是,Caco-2分析还显示了比先前化合物更高的膜通透性。