文摘
The optimization of a series of S1P<sub>1sub> agonists with limited activity against S1P<sub>3sub> is reported. A polar headgroup was used to improve the physicochemical and pharmacokinetic parameters of lead quinolinone 6. When dosed orally at 1 and 3 mg/kg, the azahydroxymethyl analogue 22 achieved statistically significant lowering of circulating blood lymphocytes 24 h postdose. In rats, a dose-proportional increase in exposure was measured when 22 was dosed orally at 2 and 100 mg/kg.
Keywords:
Sphingosine-1-phosphate receptor; S1P<sub>1sub>; agonist; multiple sclerosis