Diarylureas Containing 5-Membered Heterocycles as CB<sub>1</sub>Receptor Allosteric Modulators: Design, Synthesis, and Pharmacological Evaluation
作者:Thuy Nguyen、Thomas F. Gamage、Ann M. Decker、Nadezhda German、Tiffany L. Langston、Charlotte E. Farquhar、Terry P. Kenakin、Jenny L. Wiley、Brian F. Thomas、Yanan Zhang
DOI:10.1021/acschemneuro.8b00396
日期:2019.1.16
Allosteric modulators have attracted significant interest as an alternate strategy to modulate CB1 receptor signaling for therapeutic benefits that may avoid the adverse effects associated with orthosteric ligands. Here we extended our previous structure-activity relationship studies on the diarylurea-based CB1 negative allosteric modulators (NAMs) by introducing five-membered heterocycles to replace
变构调节剂作为调节CB1受体信号转导的替代策略引起了人们的极大兴趣,这种替代策略可避免与正构配体相关的副作用。在这里,我们通过引入五元杂环取代PSNCBAM-1(1)(第一代CB1变构之一)中的5-吡咯烷基吡啶基,扩展了以前基于二芳基脲的CB1负变构调节剂(NAM)的结构-活性关系研究。调制器。这些化合物中的许多在阻断CB1激动剂CP55,940刺激的钙动员和[35S]GTP-γ-S结合方面具有与1相当的效能。与1相似,大多数化合物通过增加[3H] CP55,940结合而显示出正的协同作用,这与正构变构调节剂(PAM)-拮抗剂机制相符。有趣的是,这些化合物在增加[3H] CP55,940的特异性结合和降低拮抗剂[3H] SR141716的结合方面表现出差异。在饱和结合研究中,仅观察到[3H] CP55,940 Bmax的增加,而未观察到Kd的增加,这表明这些化合物将低亲和力受体稳定为高亲和