Design, synthesis and evaluation of genistein-O-alkylbenzylamines as potential multifunctional agents for the treatment of Alzheimer's disease
作者:Xiaoming Qiang、Zhipei Sang、Wen Yuan、Yan Li、Qiang Liu、Ping Bai、Yikun Shi、Wei Ang、Zhenghuai Tan、Yong Deng
DOI:10.1016/j.ejmech.2014.02.045
日期:2014.4
A series of genistein derivatives with carbon spacer-linked alkylbenzylamines were designed, synthesized and tested as multifunctional agents for the treatment of Alzheimer's disease (AD). The results showed that most of these compounds exhibited good acetylcholinesterase (AChE) inhibitory activity, with moderate-to-good anti-oxidative activity. Specifically, compounds 10b, 19d and 254 exhibited significant inhibition of beta-amyloid (A beta) aggregation and exhibited metal chelating properties. In particular, 25d inhibited: self-induced A beta(1-42) aggregation, Cu2+-induced A beta(1-42) aggregation, and human AChE-induced A beta(1-40) aggregation by 35%, 77.8%, and 36.2%, respectively. Moreover, both kinetic analysis of AChE inhibition and the molecular modeling study suggested that 25d binds simultaneously to catalytic active site and peripheral anionic site of AChE. More importantly, compound 25d disassembled the well-structured A beta fibrils generated by Cu2+-induced A beta aggregation by 72.1%. Furthermore, the step-down passive avoidance test showed this compound significantly reversed scopolamine-induced memory deficit in mice. These results suggest that 25d may be a promising multifunctional agent for AD treatment. (C) 2014 Elsevier Masson SAS. All rights reserved.