Chemical conversion of nicotinamide into type I positive allosteric modulator of α7 nAChRs
作者:Xin Li、Wenjun Xie、Xintong Wang、Zongze Huang、Xiling Bian、KeWei Wang、Qi Sun
DOI:10.1016/j.bmcl.2019.05.046
日期:2019.8
Structural modifications of nicotinamide, a form of vitamin B3, gave rise to a series of compounds (8aa-8ce) that exhibit activities as type I positive allosteric modulators (PAMs) of human α7 nAChR expressed in Xenopus oocytes in two-electrode voltage clamp assay. The compound 8ai was a potent and efficacious PAM with an EC50 = 3.34 ± 1.13 μM and the maximum activation effect of α7 current over 1474 ± 246%
烟酰胺(一种维生素B3的形式)的结构修饰产生了一系列化合物(8aa-8ce),它们在非洲爪蟾卵母细胞中通过两电极电压钳测定法表现为人类α7nAChR的I型正变构调节剂(PAM)的活性。化合物8ai是有效的PAM,EC50 = 3.34±1.13μM,在乙酰胆碱(100μM)存在下,α7电流的最大激活作用超过1474±246%。它对α7nAChR的特异性高于nAChR和5-HT3A受体的其他亚型。构效关系分析确定了对生物活性至关重要的烟酰胺核的关键骨架。综上所述,作为α7nAChR的I型PAM的8ai可能有助于改善认知功能障碍。