Discovery of non-zwitterionic aryl sulfonamides as Nav1.7 inhibitors with efficacy in preclinical behavioral models and translational measures of nociceptive neuron activation
摘要:
Since zwitterionic benzenesulfonamide Na(v)1.7 inhibitors suffer from poor membrane permeability, we sought to eliminate this characteristic by replacing the basic moiety with non-basic bicyclic acetals and monocyclic ethers. These efforts led to the discovery of the non-zwitterionic aryl sulfonamide 49 as a selective Na(v)1.7 inhibitor with improved membrane permeability. Despite its moderate cellular activity, 49 exhibited robust efficacy in mouse models of neuropathic and inflammatory pain and modulated translational electromyogram measures associated with activation of nociceptive neurons. (C) 2017 Elsevier Ltd. All rights reserved.
A novelfreeradical initiated ring expansion of haloalkyl β-keto esters is described. Following alkylation of the β-keto ester with the appropriate dihalide, the resulting halide is treated at reflux with tri-n-butyltin hydride. Rearrangement to the homologated γ-keto ester occurs smoothly. An oxy radical intermediate is proposed for the reaction.
DOWD, PAUL;CHOI, SOO-CHANG, TETRAHEDRON, 45,(1989) N, C. 77-90
作者:DOWD, PAUL、CHOI, SOO-CHANG
DOI:——
日期:——
Discovery of non-zwitterionic aryl sulfonamides as Nav1.7 inhibitors with efficacy in preclinical behavioral models and translational measures of nociceptive neuron activation
作者:Yong-Jin Wu、Jason Guernon、Andrea McClure、Guanglin Luo、Ramkumar Rajamani、Alicia Ng、Amy Easton、Amy Newton、Clotilde Bourin、Dawn Parker、Kathleen Mosure、Omar Barnaby、Matthew G. Soars、Ronald J. Knox、Michele Matchett、Rick Pieschl、James Herrington、Ping Chen、D.V. Sivarao、Linda J. Bristow、Nicholas A. Meanwell、Joanne Bronson、Richard Olson、Lorin A. Thompson、Carolyn Dzierba
DOI:10.1016/j.bmc.2017.08.012
日期:2017.10
Since zwitterionic benzenesulfonamide Na(v)1.7 inhibitors suffer from poor membrane permeability, we sought to eliminate this characteristic by replacing the basic moiety with non-basic bicyclic acetals and monocyclic ethers. These efforts led to the discovery of the non-zwitterionic aryl sulfonamide 49 as a selective Na(v)1.7 inhibitor with improved membrane permeability. Despite its moderate cellular activity, 49 exhibited robust efficacy in mouse models of neuropathic and inflammatory pain and modulated translational electromyogram measures associated with activation of nociceptive neurons. (C) 2017 Elsevier Ltd. All rights reserved.