Pyrido[2,1-b]quinazoline derivatives useful as agents for treatment of allergic conditions and vascular disorders involving thrombosis

摘要

Pyrido[2,1-b]quinazoline derivatives of the formulas <IMAGE> I and <IMAGE> II wherein R1, R2 and R3 are as hereinafter set forth, are described. The compounds of formulas I and II are useful as agents for the treatment of allergic conditions as well as for the treatment of vascular disorders involving thrombosis.