Imidazol-4-one or imidazole-4-thione compounds of formula (I):
wherein X, R
1
, R
2
, R
3
, R
4
, R
5
, and R
6
are defined herein. Also disclosed is a method for treating a cannabinoid receptor-mediated disorder with these compounds.
Imidazol-4-one or imidazole-4-thione compounds of formula (I):
wherein X, R1, R2, R3, R4, R5, and R6 are defined herein. Also disclosed is a method for treating a cannabinoid receptor-mediated disorder with these compounds.
[EN] IMIDAZOL-4-ONE AND IMIDAZOLE-4-THIONE COMPOUNDS<br/>[FR] COMPOSÉS D'IMIDAZOL-4-ONE OU D'IMIDASOLE-4-THIONE
申请人:NAT HEALTH RESEARCH INSTITUTES
公开号:WO2010062686A2
公开(公告)日:2010-06-03
Imidazol-4-one or imidazole-4-thione compounds of formula (I) shown in the specification. Also disclosed is a method for treating a cannabinoid receptor-mediated disorder with these compounds.
Discovery of 2-[5-(4-Chloro-phenyl)-1-(2,4-dichloro-phenyl)-4-ethyl-1<i>H</i>-pyrazol-3-yl]-1,5,5-trimethyl-1,5-dihydro-imidazol-4-thione (BPR-890) via an Active Metabolite. A Novel, Potent and Selective Cannabinoid-1 Receptor Inverse Agonist with High Antiobesity Efficacy in DIO Mice
By using the active metabolite 5 as an initial template, further structural modifications led to the identification of the titled compound 24 (BPR-890) as a highly potent CB I inverse agonist possessing an excellent CB2/1 selectivity and remarkable in vivo efficacy in diet-induced obese mice with a minimum effective dose as low as 0.03 mg/kg (po qd) at the end of the 30-day chronic study. Current SAR studies along with those of many existing rimonabant-mimicking molecules imply that around the pyrazole C3-position, a rigid and deep binding pocket should exist for CB1 receptor. In addition, relative to the conventional carboxamide carbonyl, serving as a key hydrogen-bond acceptor during ligand-CB1 receptor interaction, the corresponding polarizable thione carbonyl might play a more critical role in stabilizing the Asp366-Lys192 salt bridge in the proposed CB1-receptor homology model and inducing significant selectivity for CB1R over CB2R.