Structure−Activity Relationships of Acetylcholinesterase Noncovalent Inhibitors Based on a Polyamine Backbone. 3. Effect of Replacing the Inner Polymethylene Chain with Cyclic Moieties
作者:Vincenzo Tumiatti、Vincenza Andrisano、Rita Banzi、Manuela Bartolini、Anna Minarini、Michela Rosini、Carlo Melchiorre
DOI:10.1021/jm0494366
日期:2004.12.1
whether 2, 3, 4, and 8 inhibit AChE-induced Abeta aggregation. Although all four derivatives caused a mixed type of AChE inhibition (active site and PAS), only 4 and 8, which bear an inner constrained spacer, were able to inhibit AChE-induced Abeta aggregation to a greater extent than donepezil. Clearly, the ability of an AChE inhibitor, based on a linear polyamine backbone, to bind both AChE sites
在本文中,我们通过研究其八亚甲基间隔基通过取代二哌啶和二苯胺部分来分离两个酰胺功能的作用,扩展了AChE抑制剂己二胺(2)的乙基类似物3的SAR研究。化合物4和8是这两个系列化合物中最有趣的。化合物4是最有效的AChE抑制剂,pIC50值为8.48 +/- 0.02,同时还显示出显着的毒蕈碱M2拮抗活性(pKb值为6.18 +/- 0.20)。合适的检测方法的可用性使我们能够验证2、3、4和8是否抑制AChE诱导的Abeta聚集。尽管所有四种衍生物都导致混合的AChE抑制类型(活性位点和PAS),但只有4和8带有内部受约束的间隔子,与多奈哌齐相比,它们能够更大程度地抑制AChE诱导的Abeta聚集。显然,基于线性多胺骨架的AChE抑制剂结合两个AChE位点的能力可能不足以抑制AChE诱导的Abeta聚集。双哌啶衍生物4成为一种有价值的药理学工具,并有望成为新的配体用于研究和有望治疗阿尔茨海默氏病的先导化合物。