Discovery of AMG 369, a Thiazolo[5,4-<i>b</i>]pyridine Agonist of S1P<sub>1</sub> and S1P<sub>5</sub>
作者:Victor J. Cee、Mike Frohn、Brian A. Lanman、Jennifer Golden、Kristine Muller、Susana Neira、Alex Pickrell、Heather Arnett、Janet Buys、Anu Gore、Mike Fiorino、Michelle Horner、Andrea Itano、Matt R. Lee、Michele McElvain、Scot Middleton、Michael Schrag、Dalia Rivenzon-Segal、Hugo M. Vargas、Han Xu、Yang Xu、Xuxia Zhang、Jerry Siu、Min Wong、Roland W. Bürli
DOI:10.1021/ml100306h
日期:2011.2.10
The optimization of a series of thiazolopyridine S1P(1) agonists with limited activity, at the S1P(3) receptor is reported. These efforts resulted in the discovery of 1-(3-fluoro-4-(5-(1-phenylcycloprol)thiazolo[5,4-b]pyridin-2yl)benzyl)-azetidine-3-carboxylic acid (5d, AMG 369), a potent dual S1P(1)/S1P(5) agonist with limited activity at S1P(3) and no activity at S1P(2)/S1P(4). Dosed orally at 0.1 mg/kg, 5d is shown to reduce blood lymphocyte counts 24 h postdose and delay the onset and reduce the severity of experimental autoimmune encephalomyelitis in rat.