Amine substitution of quinazolinones leads to selective nanomolar AChE inhibitors with ‘inverted’ binding mode
作者:Fouad H. Darras、Sarah Wehle、Guozheng Huang、Christoph A. Sotriffer、Michael Decker
DOI:10.1016/j.bmc.2014.06.045
日期:2014.9
obtained by connecting tri- and tetracyclic quinazolinones—previously described as moderately active and unselective cholinesterase (ChE) inhibitors—via a hydroxyl group in para position to an anilinic nitrogen with different amines linked via a three carbon atom spacer. These tri- and tetracyclic quinazolinones containing different alicyclic ring sizes and connected to tertiary amines were docked to a high-resolution
选择性和纳摩尔的乙酰胆碱酯酶抑制剂是通过将三环和四环喹唑啉酮(以前称为中度活性和非选择性胆碱酯酶(ChE)抑制剂)通过对位羟基与苯胺氮连接而成,该苯胺氮具有通过三个碳原子间隔基连接的不同胺。含有不同脂环的尺寸和连接到叔胺这些三-和四环喹唑啉酮对接到以高分辨率ħAChE晶体结构,以研究与实验结构-活性关系获得的结果有关的优选结合方式。尽管很少发现将杂环定位在活性位点上的“经典方向”,但对于大多数化合物而言,却获得了在活性中心具有碱性脂肪胺的另一种结合模式(“反转”方向)。基于这种反向结合模式的扩展SAR的分析能够解释化合物在AChE的结合亲和力。