| abstract |
Novel series of 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-ones of the Formula <IMAGE> (XII) wherein R1 is halogen, lower alkyl, lower alkoxy, trifluoromethyl; R2 is hydrogen, halogen, lower alkyl, lower alkoxy; R3 is hydrogen, halogen, lower alkyl, lower alkoxy; and R4 is hydrogen or lower alkyl. The compounds are therapeutically useful as inhibitors of blood platelet aggregation and/or as cardiotonic agents. |