Synthesis and binding affinity at α4β2 and α7 nicotinic acetylcholine receptors of new analogs of epibatidine and epiboxidine containing the 7-azabicyclo[2.2.1]hept-2-ene ring system
作者:Clelia Dallanoce、Carlo Matera、Luca Pucci、Cecilia Gotti、Francesco Clementi、Marco De Amici、Carlo De Micheli
DOI:10.1016/j.bmcl.2011.12.052
日期:2012.1
A group of novel racemic nicotinic ligands structurally related to epibatidine or epiboxidine [(±)-10–(±)-17] was synthesized through a palladium-catalyzed cross-coupling between the appropriate vinyl triflate and a range of organometallic heterocycles. The target compounds were evaluated for binding affinity at the α4β2 and α7 neuronal nicotinic receptors (nAChRs). The set of 3-pyridinyl derivatives
通过在适当的三氟甲磺酸乙烯酯和一系列有机金属杂环之间进行钯催化的交叉偶联,合成了一组与Epibatidine或Epiboxidine [(±)-10-(±)-17 ]相关的新型外消旋烟碱配体。评价目标化合物对α4β2和α7神经元烟碱样受体(nAChRs)的结合亲和力。3-吡啶基衍生物(±)-10,(±)-11和(±)-12的集合在亚纳摩尔范围(K i值分别为0.20、0.40和0.50 nM),并表现为α4β2与α7亚型选择性配体。有趣的是,与α4β2nAChR (K i = 13.30 nM)保持良好亲和力的,与表柔比定相关的二甲基碘化碘(±)-17,也与α7亚型(K i = 1.60 nM)紧密结合。参考和新烟碱配体之间的亲和力趋势的研究。