Synthesis of thienopyridine derivatives and its anti-platelet activity in vivo

To explore novel ADP receptor inhibitors with anti-thrombotic activity, eighteen compounds were synthesized and their structures were confirmed by ¹H NMR and MS.  The results showed that the activity of compound C1 was superior to ticlopidine in platelet aggregation inhibition tests in vivo and worthy for further investigation.  Compounds A4, B2, C4 and C7 possessed moderate platelet aggregation inhibitory activities.