Design, synthesis, biological evaluation, and docking study of novel dual-acting thiazole-pyridiniums inhibiting acetylcholinesterase and β-amyloid aggregation for Alzheimer’s disease
作者:Golaleh Ghotbi、Mohammad Mahdavi、Zahra Najafi、Farshad Homayouni Moghadam、Maryam Hamzeh-Mivehroud、Soodabeh Davaran、Siavoush Dastmalchi
DOI:10.1016/j.bioorg.2020.104186
日期:2020.10
New compounds containing thiazole and pyridinium moieties were designed and synthesized. The potency of the synthesized compounds as selective inhibitors of acetylcholinesterase (AChE), and β-amyloid aggregation (Aβ) was evaluated. Compounds 7d and 7j showed the best AChE inhibitory activities at the submicromolar concentration range (IC50 values of 0.40 and 0.69 μM, respectively). Most of the novel
设计并合成了含有噻唑和吡啶鎓部分的新化合物。评价了合成的化合物作为乙酰胆碱酯酶(AChE)和β-淀粉样蛋白聚集(Aβ)的选择性抑制剂的效能。在亚微摩尔浓度范围(IC 50 值分别为0.40和0.69μM)下,化合物7d和7j表现出最佳的AChE抑制活性。大多数新化合物显示出对丁酰胆碱酯酶(BChE)的中等至低抑制作用,这表明它们对AChE的选择性抑制作用。使用最有效的化合物7d和7j进行动力学研究证实了根据对接结果的混合型AChE抑制机制,这显示了它们与催化活性(CAS)和外围阴离子(PAS)位点的相互作用。还通过实验证实了7a,7j和7m与AChE的PAS结构域的特异性结合。此外,在浓度为10μM的情况下,7d和7j能够表现出比多奈哌齐(14.70%)更强的β-淀粉样蛋白自聚集抑制作用(分别为20.38和42.66%)。此外,化合物7j和7m被证明是PC 12上H 2 O 2引起的氧化应