Discovery of a potent, selective, and orally bioavailable histamine H3 receptor antagonist SAR110068 for the treatment of sleep–wake disorders
作者:Zhongli Gao、William J. Hurst、Werngard Czechtizky、Dominique Francon、Guy Griebel、Raisa Nagorny、Philippe Pichat、Lothar Schwink、Siegfried Stengelin、James A. Hendrix、Pascal G. George
DOI:10.1016/j.bmcl.2013.09.006
日期:2013.11
Previous studies have shown that compound 1 displayed high affinity towards histamine H-3 receptor (H3R), (human (h-H3R), K-i = 8.6 nM, rhesus monkey (rh-H3R), K-i = 1.2 nM, and rat (r-H3R), K-i = 16.5 nM), but exhibited high affinity for hERG channel. Herein, we report the discovery of a novel, potent, and highly selective H3R antagonist/inverse agonist 5a(SS) (SAR110068) with acceptable hERG channel selectivity and desirable pharmacological and pharmacokinetic properties through lead optimization sequence. The significant awakening effects of 5a(SS) on sleep-wake cycles studied by using EEG recording in rats during their light phase support its potential therapeutic utility in human sleep-wake disorders. (c) 2013 Elsevier Ltd. All rights reserved.