New spirocyclic Δ2-isoxazoline derivatives related to selective agonists of α7 neuronal nicotinic acetylcholine receptors
作者:Clelia Dallanoce、Fabio Frigerio、Giovanni Grazioso、Carlo Matera、Giacomo Luca Visconti、Marco De Amici、Luca Pucci、Francesco Pistillo、Sergio Fucile、Cecilia Gotti、Francesco Clementi、Carlo De Micheli
DOI:10.1016/j.ejmech.2011.09.028
日期:2011.12
characterized as potent and selective α7 nicotinic agonists, was prepared and assayed for binding affinity at α7 and α4β2 neuronal nicotinic acetylcholine receptors (nAChRs). The investigated derivatives (3a–3c, 4a–4c, 5a–5c, 6a–6c, and 7a–7c), synthesized via the 1,3-dipolar cycloaddition of nitrile oxides to suitable dipolarophiles, showed an overall reduced affinity at the α7 subtype when compared with
一组螺环奎宁环基-Δ的结构类似物2个-isoxazolines,其特征在于作为有效且选择性的α7烟碱激动剂,制备并测定在α7和α4β2神经元烟碱乙酰胆碱受体(nAChRs)结合亲和力。通过腈类化合物的1,3-偶极环加成反应合成合适的偶极亲和剂而合成的研究衍生物(3a-3c,4a-4c,5a-5c,6a-6c和7a-7c)在α7处总体上降低了亲和力与它们的模型化合物比较时的亚型。仅Δ 2 -isoxazolines图3a,图3b,和图6c在α7nAChRs(K i 分别为230、420和700 nM)的纳摩尔范围内保持结合亲和力。季铵盐6c还保留了值得注意的α7对α4β2亚型选择性,而3a和3b与1a和1b相比,它们的奎宁环烷基更高的同系物的选择性急剧下降。