Design, synthesis and evaluation of novel tacrine–rhein hybrids as multifunctional agents for the treatment of Alzheimer's disease
作者:Su-Yi Li、Neng Jiang、Sai-Sai Xie、Kelvin D. G. Wang、Xiao-Bing Wang、Ling-Yi Kong
DOI:10.1039/c3ob42010h
日期:——
A series of tacrineârhein hybrid compounds have been designed and synthesized as novel multifunctional potent ChE inhibitors. Most of the compounds inhibited ChEs in the nanomolar range in vitro effectively. Compound 10b was one of the most potent inhibitors and was 5-fold more active than tacrine toward AChE, and it also showed a moderate BuChE inhibition with an IC50 value of 200 nM. Kinetic and molecular modeling studies of 10b also indicated that it was a mixed-type inhibitor binding simultaneously to the active and peripheral sites of AChE. In inhibition of the AChE-induced Aβ aggregation assay, compound 10b (70.2% at 100 μM) showed the greatest inhibitory activity. In addition, 10b showed metal-chelating property and low hepatotoxicity. These results suggested that 10b might be an excellent multifunctional agent for AD treatment.
一系列他克林-雷琐酸杂合化合物被设计并合成作为新型多功能的强效胆碱酯酶抑制剂。其中大多数化合物在体外有效地抑制了胆碱酯酶,抑制浓度在纳摩尔范围内。化合物10b 是最强的抑制剂之一,对乙酰胆碱酯酶(AChE)的活性比他克林高 5 倍,并且对丁酰胆碱酯酶(BuChE)表现出中等抑制作用,其 IC50 值为 200 nM。动力学和分子建模研究也表明 10b 是一种混合型抑制剂,同时结合 AChE 的活性位点和外周位点。在抑制 AChE 诱导的 Aβ 聚集实验中,10b(在 100 μM 下为 70.2%)显示出最大的抑制活性。此外,10b 表现出金属离子络合性质和低肝毒性。这些结果表明 10b 可能是一种优秀的多功效药物,用于阿尔茨海默病的治疗。