Synthesis, Nicotinic Acetylcholine Receptor Binding Affinities, and Molecular Modeling of Constrained Epibatidine Analogues
作者:Zhi-Liang Wei、Pavel A. Petukhov、Yingxian Xiao、Werner Tückmantel、Clifford George、Kenneth J. Kellar、Alan P. Kozikowski
DOI:10.1021/jm025613w
日期:2003.3.1
Conformationally constrained epibatidine analogues 20a,b and 23a,b were synthesized using a radical cyclization as the key step. Radioligand displacement assays to six defined rat nicotinic acetylcholine receptor (nAChR) subtypes showed that 20a,b bind with moderate affinities, while 23a,b have low affinities. 20a exhibits higher affinity for the beta2 containing subtype than for the beta4 containing
使用自由基环化作为关键步骤合成了构象受限的依巴替丁类似物20a,b和23a,b。对6种确定的大鼠烟碱型乙酰胆碱受体(nAChR)亚型进行的放射性配体置换分析表明,20a,b具有中等亲和力,而23a,b具有低亲和力。20a对含β2的亚型比对含β4的对应物具有更高的亲和力,而20b具有相反的选择性。建模研究表明,药效基团元素周围的配体原子的空间分布可能控制其nAChR亚型选择性。