Imidazo[2,1-b]quinazolin-2(3H)-ones and pharmaceutical compositions for
申请人:Hoffmann-La Roche Inc.
公开号:US04256748A1
公开(公告)日:1981-03-17
Compounds of the formula ##STR1## wherein R.sup.1,R.sup.2,R.sup.3 and R.sup.4 are as hereinafter described, tautomers and salts thereof, are disclosed. The foregoing compounds inhibit the aggregation of blood platelets which renders them useful as therapeutic agents in the prophylaxis of thromboses. Furthermore, they are useful for the treatment and prophylaxis of cardiac insufficiency and cardiac failure, due to their inotropic activity without substantial tachycardia.