First Contact: 7-Phenyl-2-Aminoquinolines, Potent and Selective Neuronal Nitric Oxide Synthase Inhibitors That Target an Isoform-Specific Aspartate
作者:Maris A. Cinelli、Cory T. Reidl、Huiying Li、Georges Chreifi、Thomas L. Poulos、Richard B. Silverman
DOI:10.1021/acs.jmedchem.9b01573
日期:2020.5.14
Inhibition of neuronal nitric oxide synthase (nNOS), an enzyme implicated in neurodegenerative disorders, is an attractive strategy for treating or preventing these diseases. We previously developed several classes of 2-aminoquinoline-based nNOS inhibitors, but these compounds had drawbacks including off-target promiscuity, low activity against human nNOS, and only modest selectivity for nNOS over
抑制神经元一氧化氮合酶(nNOS)是一种涉及神经退行性疾病的酶,是治疗或预防这些疾病的有吸引力的策略。我们以前开发了几类基于2-氨基喹啉的nNOS抑制剂,但是这些化合物的缺点包括脱靶混杂,对人nNOS的活性低以及对nNOS的选择性比相关酶适度。在这项研究中,我们合成了基于7-苯基-2-氨基喹啉的新型nNOS抑制剂,并针对大鼠和人类nNOS,人类eNOS和鼠类(在某些情况下)对人类iNOS进行了测定。在氨基喹啉和带正电荷的尾部之间具有元关系的化合物很有效,对人nNOS的选择性比对人eNOS的选择性高近900倍。X射线晶体学分析表明某些化合物的氨基占据了nNOS特异性天冬氨酸残基(eNOS中不存在)周围充满水的口袋。诱变研究证实了这种相互作用,使7-苯基-2-氨基喹啉成为第一个与该残基相互作用的氨基喹啉。