Epiboxidine and novel-related analogues: A convenient synthetic approach and estimation of their affinity at neuronal nicotinic acetylcholine receptor subtypes
作者:Luca Rizzi、Clelia Dallanoce、Carlo Matera、Pietro Magrone、Luca Pucci、Cecilia Gotti、Francesco Clementi、Marco De Amici
DOI:10.1016/j.bmcl.2008.07.016
日期:2008.8
compounds were assayed for their binding affinity at neuronal alpha4beta2 and alpha7 nicotinic acetylcholine receptors. Epiboxidine 3 behaved as a high affinity alpha4beta2 ligand (K(i)=0.4 nM) and, interestingly, evidenced a relevant affinity also for the alpha7 subtype (K(i)=6 nM). Derivative 7, the closest analogue of 3 in this group, bound with lower affinity at both receptor subtypes (K(i)=50 nM for alpha4beta2
利用钯催化的Stille偶联作为反应顺序中的关键步骤,可以有效地制备外消旋的外表艾替丁烷3,内表艾替丁烷6和两种不饱和的与表甲替丁相关的衍生物7和8。分析了目标化合物对神经元α4beta2和α7烟碱乙酰胆碱受体的结合亲和力。Epiboxidine 3表现为高亲和力的alpha4beta2配体(K(i)= 0.4 nM),有趣的是,也证明了对alpha7亚型也有相关的亲和力(K(i)= 6 nM)。衍生物7,该组中最接近的类似物3,在两种受体亚型上均具有较低的亲和力(α4beta2的K(i = 50 nM,α7的K(i)= 1.6 microM))证明了alpha4beta2相对于alpha7选择性的提高与模型化合物比较时。