Design, Synthesis, and Biological Evaluation of Coumarin Derivatives Tethered to an Edrophonium-like Fragment as Highly Potent and Selective Dual Binding Site Acetylcholinesterase Inhibitors
作者:Leonardo Pisani、Marco Catto、Ilenia Giangreco、Francesco Leonetti、Orazio Nicolotti、Angela Stefanachi、Saverio Cellamare、Angelo Carotti
DOI:10.1002/cmdc.201000210
日期:2010.9.3
N‐trialkylbenzaminium moieties were synthesized and evaluated as acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitors. The highest AChE inhibitory potency in the 3‐hydroxy‐N,N‐dimethylanilino series was observed with a 6,7‐dimethoxy‐3‐substituted coumarin derivative, which, along with an outstanding affinity (IC50=0.236 nM) exhibits excellent AChE/BChE selectivity (SI>300 000). Most of the synthesized
合成了一系列通过适当的间隔基连接到3-羟基-N , N-二甲基苯胺基或3-羟基-N , N , N-三烷基苯甲min部分的取代香豆素,并将其评估为乙酰胆碱酯酶(AChE)和丁酰胆碱酯酶(BChE)抑制剂。用6,7-二甲氧基-3-取代的香豆素衍生物观察到3-羟基N , N-二甲基苯胺基系列中最高的AChE抑制力,并具有出色的亲和力(IC 50 = 0.236 n M)。 AChE / BChE选择性(SI> 300 000)。大部分合成的3-羟基N , N, Ñ -trialkylbenzaminium盐显示在亚纳摩尔以优异的乙酰胆碱酯酶/的BChE选择性沿着皮摩尔范围一种AChE亲和力(SI值高达138 333)。对接和分子动力学模拟的结合使用使我们能够阐明观察到的结构亲和力和结构选择性关系,检测两种可能的替代结合模式,并评估AChE外围中π-π堆积相互作用的关键作用结合位点。