Synthesis and structure–activity relationship of 1,2,4-triazole-containing diarylpyrazolyl carboxamide as CB1 cannabinoid receptor–ligand
作者:Hee Jeong Seo、Min Ju Kim、Suk Ho Lee、Sung-Han Lee、Myung Eun Jung、Mi-Soon Kim、Kwangwoo Ahn、Jeongmin Kim、Jinhwa Lee
DOI:10.1016/j.bmc.2009.12.040
日期:2010.2
Numerous research groups have been engaged in searching for novel CB1 receptor antagonists, since SR141716A (rimonabant), a CB1 receptor antagonist, proved to be efficacious in human for the treatment of obesity. In the present study, a series of 1,2,4-triazole-containing diarylpyrazolyl carboxamides based on the 1,5-diarylpyrazole template of rimonabant, was synthesized and tested for CB1 receptor binding affinity. The structure-activity relationship studies demonstrated that incorporation of 1,2,4-triazole ring onto the pyrazole scaffold via a methylene linker led to a significant improvement for CB1 receptor binding affinity. Importantly, these analogues also exhibited excellent selectivity for CB1 receptor over CB2 receptor. (C) 2009 Elsevier Ltd. All rights reserved.