A series of aryl-or aralky-substituted 2-amino-3, 4-dihydroquinazolines and related compounds were synthesized. The compounds were evaluated for inhibitory activity towards collagen-and ADP-induced aggregation of rat blood platelet in vitro and ex vivo. A group of 3-benzyl-substituted derivatives had potent activity. The structure-activity relationships are discussed.
Hypoxia-Selective Antitumor Agents. 12. Nitrobenzyl Quaternary Salts as Bioreductive Prodrugs of the Alkylating Agent Mechlorethamine
作者:Moana Tercel、William R. Wilson、Robert F. Anderson、William A. Denny
DOI:10.1021/jm9507791
日期:1996.1.1
-358 mV and undergoes reductively-induced fragmentation to release the nitrogenmustard mechlorethamine. The compounds were prepared by halogenation (SOCl2) of the corresponding quaternary diols, which in turn were synthesized from N-methyldiethalnolamine and substituted nitrobenzyl chlorides. The reduction potentials of the benzene-substituted compounds were generally well-predicted by Hammett substituent
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
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.
Optionally substituted 1-H-2,3,3a,4-Tetrahydro-2-oxopyrrolo[2,3-b]quinolines or the pharmaceutically acceptable salts thereof are compounds useful as blood platelet anti-aggregative and/or antihypertensive agents in mammals, including humans.