Synthesis and biological evaluation of substituted benzo[h]cinnolinones and 3H-benzo[6,7]cyclohepta[1,2-c]pyridazinones: higher homologs of the antihypertensive and antithrombotic 5H-indeno[1,2-c]pyridazinones
作者:Giorgio Cignarella、Daniela Barlocco、Gerard A. Pinna、Mario Loriga、Maria M. Curzu、Odoardo Tofanetti、Mauro Germini、Pietro Cazzulani、Ennio Cavalletti
DOI:10.1021/jm00130a009
日期:1989.10
that of acetylsalicylic acid, most of the benzo[h]cinnolinones exhibited significant antihypertensive, inotropic, and antithrombotic properties. In this respect, the 8-amino (3b) and 8-acetylamino (3c) together with the 4,4a-dehydro analogue of 3c (11) were found to possess the most potent and long-lasting antihypertensive activity. In particular, the dextro isomer of 3c was more active than the racemic