Discovery of benzamide analogs as negative allosteric modulators of human neuronal nicotinic receptors: Pharmacophore modeling and structure–activity relationship studies
摘要:
The present study describes our ongoing efforts toward the discovery of drugs that selectively target nAChR subtypes. We exploited knowledge on nAChR ligands and their binding site that were previously identified by our laboratory through virtual screenings and identified benzamide analogs as a novel chemical class of neuronal nicotinic receptor (nAChR) ligands. The lead molecule, compound 1 (4-(allyloxy)-N-(6-methylpyridin-2-yl)benzamide) inhibits nAChR activity with an IC50 value of 6.0 (3.4-10.6) mu M on human alpha 4 beta 2 nAChRs with a similar to 5-fold preference against human alpha 3 beta 4 nAChRs. Twenty-six analogs of compound 1 were also either synthesized or purchased for structure-activity relationship (SAR) studies and provided information relating the chemical/structural properties of the molecules to their ability to inhibit nAChR activity. The discovery of subtype-selective ligands of nAChRs described here should contribute significantly to our understanding of the involvement of specific nAChR subtypes in normal and pathophysiological states. (C) 2013 Published by Elsevier Ltd.
Discovery of benzamide analogs as negative allosteric modulators of human neuronal nicotinic receptors: Pharmacophore modeling and structure–activity relationship studies
作者:Bitna Yi、Sihui Long、Tatiana F. González-Cestari、Brandon J. Henderson、Ryan E. Pavlovicz、Karl Werbovetz、Chenglong Li、Dennis B. McKay
DOI:10.1016/j.bmc.2013.03.082
日期:2013.8
The present study describes our ongoing efforts toward the discovery of drugs that selectively target nAChR subtypes. We exploited knowledge on nAChR ligands and their binding site that were previously identified by our laboratory through virtual screenings and identified benzamide analogs as a novel chemical class of neuronal nicotinic receptor (nAChR) ligands. The lead molecule, compound 1 (4-(allyloxy)-N-(6-methylpyridin-2-yl)benzamide) inhibits nAChR activity with an IC50 value of 6.0 (3.4-10.6) mu M on human alpha 4 beta 2 nAChRs with a similar to 5-fold preference against human alpha 3 beta 4 nAChRs. Twenty-six analogs of compound 1 were also either synthesized or purchased for structure-activity relationship (SAR) studies and provided information relating the chemical/structural properties of the molecules to their ability to inhibit nAChR activity. The discovery of subtype-selective ligands of nAChRs described here should contribute significantly to our understanding of the involvement of specific nAChR subtypes in normal and pathophysiological states. (C) 2013 Published by Elsevier Ltd.