Synthesis of Epibatidine-Related Δ2-Isoxazoline Derivatives and Evaluation of Their Binding Affinity at Neuronal Nicotinic Acetylcholine Receptors
作者:Clelia Dallanoce、Paola Bazza、Giovanni Grazioso、Marco De Amici、Cecilia Gotti、Loredana Riganti、Francesco Clementi、Carlo De Micheli
DOI:10.1002/ejoc.200600231
日期:2006.8
The group of Δ2-isoxazoline derivatives 5a–c and 6a–c, structurally related to epibatidine, and the simplified analogues 7a–c were synthesized by means of a 1,3-dipolar cycloaddition-based strategy and tested at α4β2 and α7 neuronal acetylcholine receptor (nAChR) subtypes. Competition binding experiments at α4β2 nAChR subtypes showed an overall significant reduction in affinity for the compounds under
Δ2-异恶唑啉衍生物组 5a-c 和 6a-c,结构上与表巴替丁相关,以及简化的类似物 7a-c 是通过基于 1,3-偶极环加成的策略合成的,并在 α4β2 和 α7 神经元乙酰胆碱上进行测试受体 (nAChR) 亚型。α4β2 nAChR 亚型的竞争结合实验表明,与参考放射性配体 [3H]-epibatidine 相比,对所研究化合物的亲和力总体显着降低。考虑到文献中报道的基于配体的药效团模型和最近提出的 α4β2 受体亚型分子模型,这些结果已经合理化。相反,化合物 5b、5c 和 6b 对 α7 受体表现出显着的亲和力,并且在 5c 的情况下,还有一些亚型选择性。(© Wiley-VCH Verlag GmbH & Co. KGaA,