Synthesis and evaluation of multi-target-directed ligands for the treatment of Alzheimer’s disease based on the fusion of donepezil and melatonin
作者:Jin Wang、Zhi-Min Wang、Xue-Mei Li、Fan Li、Jia-Jia Wu、Ling-Yi Kong、Xiao-Bing Wang
DOI:10.1016/j.bmc.2016.07.025
日期:2016.9
ions, reduce PC12 cells death induced by oxidative stress and penetrate the blood-brain barrier (BBB). Taken together, these results strongly indicated the hybridization approach is an efficient strategy to identify novel scaffolds with desired bioactivities, and further optimization of 4u may be helpful to develop more potent lead compound for AD treatment.
通过融合乙酰胆碱酯酶(AChE)抑制剂多奈哌齐和抗氧化褪黑激素获得的一系列新化合物被设计为用于治疗阿尔茨海默氏病(AD)的多靶标配体。体外测定表明,大多数目标化合物均具有抑制乙酰胆碱酯酶(eeAChE和hAChE),丁酰胆碱酯酶(eqBuChE和hBuChE)和β-淀粉样蛋白(Aβ)聚集的显着能力,并可以充当潜在的抗氧化剂和生物金属螯合剂。特别是4u表现出对AChE的良好抑制作用(eeAChE的IC50值为193nM,hAChE的273nM),对BuChE的强烈抑制(eqBuChE的IC50值为73nM和hBuChE的IC50值为56nM),对Aβ聚集的中等抑制(在20μM时为56.3%)以及良好的抗氧化活性(通过ORAC分析得出的当量为3.28trolox)。分子建模研究与动力学分析相结合,发现4u是一种混合型抑制剂,同时与AChE的催化阴离子位点(CAS)和外围阴离子位点(PAS)结合