4-Methoxy-<i>N</i>-[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide: A Potent and Selective Agonist of S1P<sub>1</sub>
作者:Lewis D. Pennington、Kelvin K. C. Sham、Alexander J. Pickrell、Paul E. Harrington、Michael J. Frohn、Brian A. Lanman、Anthony B. Reed、Michael D. Croghan、Matthew R. Lee、Han Xu、Michele McElvain、Yang Xu、Xuxia Zhang、Michael Fiorino、Michelle Horner、Henry G. Morrison、Heather A. Arnett、Christopher Fotsch、Min Wong、Victor J. Cee
DOI:10.1021/ml2001399
日期:2011.10.13
The sphingosine-1-phosphate-1 receptor (S1P(1)) and its endogenous ligand sphingosine-1-phosphate (S1P) cooperatively regulate lymphocyte trafficking from the lymphatic system. Herein, we disclose 4-methoxy-N[2-(trifluoromethyl)biphenyl-4-ylcarbamoyl]nicotinamide (8), an uncommon example of a synthetic S1P(1) agonist lacking a polar headgroup, which is shown to effect dramatic reduction of circulating lymphocytes (POC = -78%) in rat 24 h after a single oral dose (1 mg/kg). The excellent potency that 8 exhibits toward S1P(1) (EC50 = 0.035 mu M, 96% efficacy) and the >100-fold selectivity that it displays against receptor subtypes S1P(2-5) suggest that it may serve as a valuable tool to understand the clinical relevance of selective S1P(1) agonism.