| abstract |
To provide a useful cannabinoid receptor CB 2 selective ligands in the treatment of pain. A novel compound of formula (I) is provided. Wherein R1 is heteroarylalkyl, R3 is selected from the group consisting of hydrogen and alkyl, R4 is 2,2,3,3-tetramethylcyclopropyl, etc., R5, R6, R7 and R8 are Independently selected from hydrogen, alkenyl, carboxy, cyano, etc.) [Selection figure] None |