728024-51-9Relevant articles and documents
Discovery and optimization of a novel series of N-arylamide oxadiazoles as potent, highly selective and orally bioavailable cannabinoid receptor 2 (CB 2) agonists
Cheng, Yuan,Albrecht, Brian K.,Brown, James,Buchanan, John L.,Buckner, William H.,DiMauro, Erin F.,Emkey, Renee,Fremeau Jr., Robert T.,Harmange, Jean-Christophe,Hoffman, Beth J.,Huang, Liyue,Huang, Ming,Lee, Josie Han,Lin, Fen-Fen,Martin, Matthew W.,Nguyen, Hung Q.,Patel, Vinod F.,Tomlinson, Susan A.,White, Ryan D.,Xia, Xiaoyang,Hitchcock, Stephen A.
experimental part, p. 5019 - 5034 (2009/07/19)
The CB2 receptor is an attractive therapeutic target for analgesic and anti-inflammatory agents. Herein we describe the discovery of a novel class of oxadiazole derivatives from which potent and selective CB 2 agonist leads were developed. Initial hit 7 was identified from a cannabinoid target-biased library generated by virtual screening of sample collections using a pharmacophore model in combination with a series of physicochemical filters. 7 was demonstrated to be a selective CB2 agonist (CB2 EC50 = 93 nM, Emax = 98%, CB 1 EC50 > 10 μM). However, this compound exhibited poor solubility and relatively high clearance in rat, resulting in low oral bioavailability. In this paper, we report detailed SAR studies on 7 en route toward improving potency, physicochemical properties, and solubility. This effort resulted in identification of 63 that is a potent and selective agonist at CB2 (EC50 = 2 nM, Emax = 110%) with excellent pharmacokinetic properties.
