Structure–activity relationship exploration of Kv1.3 blockers based on diphenoxylate
作者:William Nguyen、Brittany L. Howard、David P. Jenkins、Heike Wulff、Philip E. Thompson、David T. Manallack
DOI:10.1016/j.bmcl.2012.09.080
日期:2012.12
Diphenoxylate, a well-known opioid agonist and anti-diarrhoeal agent, was recently found to block Kv1.3 potassium channels, which have been proposed as potential therapeutic targets for a range of autoimmune diseases. The molecular basis for this Kv1.3 blockade was assessed by the selective removal of functional groups from the structure of diphenoxylate as well as a number of other structural variations. Removal of the nitrile functional group and replacement of the C-4 piperidinyl substituents resulted in several compounds with submicromolar IC50 values. (C) 2012 Elsevier Ltd. All rights reserved.