Probing the cannabinoid CB1/CB2 receptor subtype selectivity limits of 1,2-diarylimidazole-4-carboxamides by fine-tuning their 5-substitution pattern
作者:Jos H.M. Lange、Martina A.W. van der Neut、Alice J.M. Borst、Mahmut Yildirim、Herman H. van Stuivenberg、Bernard J. van Vliet、Chris G. Kruse
DOI:10.1016/j.bmcl.2010.03.068
日期:2010.5
The cannabinoid CB1/CB2 receptor subtype selectivity in the 1,2-diarylimidazole-4-carboxamide series was boosted by fine-tuning its 5-substitution pattern. The presence of the 5-methylsulfonyl group in 11 led to a greater than similar to 840-fold CB1/CB2 subtype selectivity. The compounds 10, 18 and 19 were found more active than rimonabant (1) in a CB1-mediated rodent hypotension model after oral administration. Our findings suggest a limited brain exposure of the P-glycoprotein substrates 11, 12 and 21. (C) 2010 Elsevier Ltd. All rights reserved.