Spirocyclic Pyridoazepine Analogues of Galanthamine: Synthesis, Modelling Studies and Evaluation as Inhibitors of Acetylcholinesterase
作者:Sofie Vanlaer、Wim M. De Borggraeve、Arnout Voet、Constant Gielens、Marc De Maeyer、Frans Compernolle
DOI:10.1002/ejoc.200800062
日期:2008.5
pyridoazepines, designed as simplified analogues of the alkaloid galanthamine, were synthesised and evaluated as inhibitors of acetylcholinesterase. The key cyclisation step involved internal displacement of 2-chloro or 2-iodopyridine by either nucleophilic aromatic substitution or a Heck reaction. The target compounds showed significant inhibition of acetylcholinesterase but lower than that of galanthamine
Spirocyclic pyridoazepines 被设计为生物碱加兰他敏的简化类似物,被合成并评估为乙酰胆碱酯酶的抑制剂。关键的环化步骤涉及通过亲核芳香取代或 Heck 反应对 2-氯或 2-碘吡啶进行内部置换。目标化合物对乙酰胆碱酯酶有显着抑制作用,但低于加兰他敏。这一结果可以通过基于乙酰胆碱酯酶 - 雪花胺复合物的已知晶体结构的比较对接模拟研究来合理化。发现共结晶水分子与受体和配体的多重氢键键合对于有效结合酶的活性位点至关重要。(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)