名称:
                                1,2,4-Triazolo[3,4-a]pyridine as a novel, constrained template for fibrinogen receptor (GPIIb/IIIa) antagonists
                             
                            
                                摘要:
                                Conformationally constrained analogues of the GPIIb/IIIa antagonist elarofiban (RWJ-53308) have been synthesized and biologically evaluated. The 1,2,4-triazolo[3,4-a]pyridine scaffold provided potent antagonists with favorable pharmacodynamic and pharmacokinetic attributes in dogs. Compounds 12a and 13a exhibited enhancements in oral bioavailability, t(1/2), and ex vivo duration of action (inhibition of ADP-induced platelet aggregation) relative to elarofiban. (C) 2001 Elsevier Science Ltd. All rights reserved.