Thrombin active site inhibitors: chemical synthesis, in vitro and in vivo pharmacological profile of a novel and selective agent BMS-189090 and analogues.

A series of structurally novel small molecule inhibitors of human alpha-thrombin was prepared to elucidate their structure- activity relationships (SAR), selectivity and activity in vivo. BMS-189090 (5) is identified as a potent, selective, and reversible inhibitor of human alpha-thrombin that is efficacious in vivo in a mice lethality model, and in inhibiting both arterial and venous thrombosis in a rat model.