Chemistry And Pharmacological Characterization Of Novel Nitrogen Analogues Of Amop-H-Oh (Sazetidine-A 6-[5-(Azetidin-2-Ylmethoxy)Pyridin-3-Yl]Hex-5-Yn-1- Ol) As Î±4Î²2-Nicotinic Acetylcholine Receptor-Selective Partial Agonists
In order to advance therapeutic applications of nicotinic ligands, continuing research efforts are being directed toward the identification and characterization of novel nicotinic acetylcholine receptor (nAChR) ligands that are both potent and subtype selective. Herein we report the synthesis and pharmacological evaluation of members of a new series of 3-alkoxy-5- aminopyridine derivatives that display good selectivity for the Î±4Î²2-nAChR subtype based on ligand binding and functional evaluations. The most potent ligand in this series, compound 64, showed high radioligand binding affinity and selectivity for rat Î±4Î²2-nAChR with a Ki value of 1.2 nM and 4700-fold selectivity for Î±4Î²2- over Î±3Î²4-nAChR, and âˆ¼100-fold selectivity for functional, high-sensitivity, human Î±4Î²2-nAChR over Î±3Î²4*-nAChR. In the mouse forced swim test, compound 64 exhibited antidepressant-like effects. Structure-activity relationship (SAR) analyses suggest that the introduction of additional substituents to the amino group present on the pyridine ring of the N-demethylated analogue of compound 17 can provide potent Î±4Î²2-nAChR-selective ligands for possible use in treatment of neurological and psychiatric disorders including depression. Â© 2010 American Chemical Society.
Journal of Medicinal Chemistry
Digital Object Identifier (DOI)
Liu, Jianhua; Eaton, J. Brek; Caldarone, Barbara; Lukas, Ronald J.; and Kozikowski, Alan P., "Chemistry And Pharmacological Characterization Of Novel Nitrogen Analogues Of Amop-H-Oh (Sazetidine-A 6-[5-(Azetidin-2-Ylmethoxy)Pyridin-3-Yl]Hex-5-Yn-1- Ol) As Î±4Î²2-Nicotinic Acetylcholine Receptor-Selective Partial Agonists" (2010). Neurobiology. 196.