Synthesis of<i>N</i>-Substituted Piperidine Salts as Potential Muscarinic Ligands for Alzheimer's Applications
作者:John Boulos、Jan Jakubik、Alena Randakova、Cristina Avila
DOI:10.1002/jhet.1742
日期:2013.11
Several heterocyclic N‐piperidine substituted salts were synthesized that were found to inhibit the specific binding of the antagonist [3H] quinuclidinyl benzilate in radioligand muscarinic binding assays (3H‐QNB) in bioassays. One of the heterocyclic salts, compound 7, met the significance criteria in these assays (>50% inhibition) at 10 μM of the nonselective muscarinic antagonist (3H‐QNB) in cells
合成了几种杂环N-哌啶取代的盐,这些盐在生物测定中的放射性配体毒蕈碱结合测定(3 H-QNB)中发现能抑制拮抗剂[ 3 H]奎宁环基苯甲酸酯的特异性结合。其中一种杂环盐化合物7在Wistar大鼠大脑皮层细胞中的非选择性毒蕈碱拮抗剂(3 H-QNB)浓度为10μM时,在这些测定中达到了显着性标准(抑制> 50%)。此外,该化合物在10μM的M 5受体拮抗剂(3 H-QNB)(IC 50 6.34μM,K i 3.93μM,n H)上表现出61%的抑制作用 = 0.996)在人重组CHO细胞系中。从Ricerca Biosciences获得的这些数据表明,化合物7对M 5受体具有选择性。从捷克科学院另一项研究表明,化合物7是3〜8倍更有效的在M个2比在具有竞争拮抗剂毒蕈碱受体的其它亚型Ñ -methylscopolamine和选择性的M 1种受体在M 3和M 5中拮抗毒蕈碱激动剂卡巴胆碱诱导的肌醇磷酸酯蓄积。