Ec. Lawson et al., 1,2,4-Triazolo[3,4-a]pyridine as a novel, constrained template for fibrinogen receptor (GP11b/111a) antagonists, BIOORG MED, 11(19), 2001, pp. 2619-2622
Conformationally constrained analogues of the GPIIb/IIIa antagonist elarofi
ban (RWJ-53308) have been synthesized and biologically evaluated. The 1,2,4
-triazolo[3,4-a]pyridine scaffold provided potent antagonists with favorabl
e pharmacodynamic and pharmacokinetic attributes in dogs. Compounds 12a and
13a exhibited enhancements in oral bioavailability, t(1/2), and ex vivo du
ration of action (inhibition of ADP-induced platelet aggregation) relative
to elarofiban. (C) 2001 Elsevier Science Ltd. All rights reserved.