Novel series of 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-ones of the Formula ##STR1## wherein R.sub.1 is halogen, lower alkyl, lower alkoxy, trifluoromethyl; R.sub.2 is hydrogen, halogen, lower alkyl, lower alkoxy; R.sub.3 is hydrogen, halogen, lower alkyl, lower alkoxy; and R.sub.4 is hydrogen or lower alkyl. The compounds are therapeutically useful as inhibitors of blood platelet aggregation and/or as cardiotonic agents.
1,3-Dihydro-2H-imidazo[4,5-b]quinolin-2-ones - inhibitors of blood platelet cAMP phosphodiesterase and induced aggregation
作者:Nicholas A. Meanwell、Herbert R. Roth、Edward C. R. Smith、Donald L. Wedding、J. J. Kim Wright、J. Stuart Fleming、Elizabeth Gillespie
DOI:10.1021/jm00113a033
日期:1991.9
5-b]quinolin-2-one derivatives was synthesized and evaluated as inhibitors of cAMP hydrolysis by a crude human platelet phosphodiesterase preparation and as inhibitors of ADP- and collagen-induced aggregation of rabbit blood platelets. The parent structure 7a, demonstrated potent inhibitory activity that was enhanced by the introduction of alkyl, alkoxy, or halogen substituents at the 5-, 6-, 7-, and 8-positions