Novel tricyclic Δ2-isoxazoline and 3-oxo-2-methyl-isoxazolidine derivatives: Synthesis and binding affinity at neuronal nicotinic acetylcholine receptor subtypes
作者:Clelia Dallanoce、Fabio Frigerio、Giuliana Martelli、Giovanni Grazioso、Carlo Matera、Diego Yuri Pomè、Luca Pucci、Francesco Clementi、Cecilia Gotti、Marco De Amici
DOI:10.1016/j.bmc.2010.04.065
日期:2010.6.15
assayed at α4β2 and α7 neuronal acetylcholine receptors (nAChRs). The results of competition binding experiments indicated for the new derivatives a reduction of the affinity at the α4β2 subtype in comparison with the reference molecules, coupled with an overall negligible affinity at the α7 subtype. The binding mode of the bromo-Δ2-isoxazolines 4b and 7b, which were the highest affinity ligands in the series
A组新的三环Δ的2个-isoxazolines(图4b,图5b,图7a - b,和图8a - b)和3-氧代-异恶唑烷(6A - b和图9a - b通过与1,3,3-偶极环加成反应制备涉及结构上的胱氨酸或去铁血红素的α-己内酯和氧化溴腈。在α4β2和α7神经元乙酰胆碱受体(nAChRs)处测定了目标化合物。竞争结合实验的结果表明,与参考分子相比,新衍生物对α4β2亚型的亲和力降低,并且对α7亚型的总体亲和力可忽略不计。溴- Δ的结合模式2 -isoxazolines 4B和图7b,这是在该系列中的最高亲和配体(ķ我 = 0.92和0.75μM,分别地),通过应用α4β2nAChRs的的最近开发的模型进行分析。