AM-630 (6-Iodopravadoline) is a drug that acts as a potent and selective inverse agonist for the cannabinoid receptorCB2, with a Ki of 32.1 nM at CB2 and 165x selectivity over CB1, at which it acted as a weak partial agonist.[1][2] It is used in the study of CB2 mediated responses and has been used to investigate the possible role of CB2 receptors in the brain.[3][4] AM-630 is significant as one of the first indole derived cannabinoid ligands substituted on the 6-position of the indole ring, a position that has subsequently been found to be important in determining affinity and efficacy at both the CB1 and CB2 receptors, and has led to the development of many related derivatives.[5][6][7][8][9]
^Ishiguro H, Horiuchi Y, Ishikawa M, Koga M, Imai K, Suzuki Y, et al. (May 2010). "Brain cannabinoid CB2 receptor in schizophrenia". Biological Psychiatry. 67 (10): 974–982. doi:10.1016/j.biopsych.2009.09.024. PMID19931854. S2CID14222913.
^Eissenstat MA, Bell MR, D'Ambra TE, Alexander EJ, Daum SJ, Ackerman JH, et al. (August 1995). "Aminoalkylindoles: structure-activity relationships of novel cannabinoid mimetics". Journal of Medicinal Chemistry. 38 (16): 3094–3105. doi:10.1021/jm00016a013. PMID7636873.
^Frost JM, Dart MJ, Tietje KR, Garrison TR, Grayson GK, Daza AV, et al. (March 2008). "Indol-3-yl-tetramethylcyclopropyl ketones: effects of indole ring substitution on CB2 cannabinoid receptor activity". Journal of Medicinal Chemistry. 51 (6): 1904–1912. doi:10.1021/jm7011613. PMID18311894.
^Adam, J. M.; et al. (2010). "Design, synthesis, and structure–activity relationships of indole-3-carboxamides as novel water soluble cannabinoid CB1 receptor agonists". MedChemComm. 1: 54. doi:10.1039/c0md00022a.