Biarylpyrazole Inverse Agonists at the Cannabinoid CB1 Receptor: Importance of the C-3 Carboxamide Oxygen/Lysine3.28(192) Interaction
作者:Dow Hurst、Uju Umejiego、Diane Lynch、Herbert Seltzman、Steven Hyatt、Michael Roche、Sean McAllister、Daniel Fleischer、Ankur Kapur、Mary Abood、Shanping Shi、Jannie Jones、Deborah Lewis、Patricia Reggio
DOI:10.1021/jm060446b
日期:2006.10.1
values versus [3H]CP55,940 reported here. In calcium channel assays, all analogues with carboxamide oxygens (1, 3, and 4) were found to be inverse agonists, whereas those that lacked this group (2, 5, and 6) were found to be neutral antagonists. Taken together, these results support the hypothesis that it is the carboxamide oxygen of the C-3 substituent of 1 that engages in a hydrogen bond with K3
已显示联芳基吡唑,N-(哌啶-1-基)-5-(4-氯苯基)-1-(2,4-二氯苯基)-4-甲基-1H-吡唑-3-甲酰胺(SR141716; 1)在大麻素CB1受体上起反向激动剂/拮抗剂的作用。我们之前的突变周期研究表明,K3.28(192)与野生型(WT)CB1中1的C-3取代基直接相互作用。(1)但是,这些结果并未确定1的C-3取代基与K3.28(192)氢键,羧酰胺氧或哌啶氮有关。此外,我们先前的5-(4-氯苯基)-3-[(E)-2-环己基乙烯基] -1-(2,4-二氯苯基)-4-甲基-1H-吡唑(VCHSR; 2 )(1的类似物,其C-3取代基缺乏氢键能力)表明该化合物可作为中性拮抗剂,(1)这些结果表明联芳基吡唑与CB1处的K3.28(192)相互作用与反向激动作用之间存在一定的关系,但结果与1相反。单对化合物(1和2)。本文介绍的工作旨在测试从我们的建模和突变周期结果得出的两个假