Discovery of a Novel, Selective, and Orally Bioavailable Class of Thrombin Inhibitors Incorporating Aminopyridyl Moieties at the P1 Position
摘要:
A novel class of thrombin inhibitors incorporating aminopyridyl moieties at the P1 position has been discovered. Four of these thrombin inhibitors (13b,c,e and 14d) showed nanomolar potency (K-i 0.8-12 nM), 300-1500-fold selectivity for thrombin compared with trypsin, and good oral bioavailability (F = 40-76%) in rats or dogs. The neutral Fl was expected to increase metabolic stability and oral absorption. Identification of this novel aminopyridyl group at Fl was a key step in our search for a clinical candidate.
Discovery of a Novel, Selective, and Orally Bioavailable Class of Thrombin Inhibitors Incorporating Aminopyridyl Moieties at the P1 Position
摘要:
A novel class of thrombin inhibitors incorporating aminopyridyl moieties at the P1 position has been discovered. Four of these thrombin inhibitors (13b,c,e and 14d) showed nanomolar potency (K-i 0.8-12 nM), 300-1500-fold selectivity for thrombin compared with trypsin, and good oral bioavailability (F = 40-76%) in rats or dogs. The neutral Fl was expected to increase metabolic stability and oral absorption. Identification of this novel aminopyridyl group at Fl was a key step in our search for a clinical candidate.