In this study, a novel series of CB2 receptor agonist imine derivatives, 1–6, was synthesized and evaluated for activity against the CB2 receptor. In a previous paper we reported the synthesis and SARs of thiazole derivative 1, a potent CB2 receptor agonist, but we had not assessed chemical modifications of the 5-membered heteroring of 1. In the present study, we therefore tried chemically modifying the 5-membered heteroring of 1 in an attempt to ...