Homodimeric Bis-Quaternary Heterocyclic Ammonium Salts as Potent Acetyl- and Butyrylcholinesterase Inhibitors: A Systematic Investigation of the Influence of Linker and Cationic Heads over Affinity and Selectivity
作者:Ana Conejo-García、Leonardo Pisani、Maria del Carmen Núñez、Marco Catto、Orazio Nicolotti、Francesco Leonetti、Joaquín M. Campos、Miguel A. Gallo、Antonio Espinosa、Angelo Carotti
DOI:10.1021/jm101299d
日期:2011.4.28
A molecular library of quaternary ammonium salts (QASs), mainly composed of symmetrical bis-quaternary heterocyclic bromides exhibiting choline kinase (ChoK) inhibitory activity, were evaluated for their ability to inhibit acetyl- and butyrylcholinesterase (AChE and BChE, respectively). The molecular framework of QASs consisted of two positively charged heteroaromatic (pyridinium or quinolinium) or
季铵盐(QASs)的分子库,主要由具有胆碱激酶(ChoK)抑制活性的对称双季铵溴化物组成,评估了它们抑制乙酰胆碱酯酶和丁酰胆碱酯酶的能力(分别为AChE和BChE)。QAS的分子框架由两个带正电荷的杂芳族(吡啶或喹啉鎓)或空间受阻的脂肪族(喹啉鎓)氮环通过亲脂性刚性或半刚性接头保持适当的距离组成。许多同二聚体QAS在纳摩尔范围内显示出AChE和BChE抑制能力,并且酶选择性低。关于AChE,BChE,56)表现出最高的AChE亲和力(IC 50 = 15 nM)和选择性超过BChE和ChoK(分别为SI = 50和562),并且在重症肌无力和神经肌肉阻滞中有希望的药理潜力。