Cardiotonic agents. 4. Synthesis and biological evaluation of N-substituted 2,4,4a,5-tetrahydro-3H-indeno[1,2-c]pyridazin-3-ones: rigid structures derived from CI-930 and analogs
作者:Ila Sircar、Bradley L. Duell、Michael H. Cain、Sandra E. Burke、James A. Bristol
DOI:10.1021/jm00161a003
日期:1986.11
Several N-substituted 3H-indeno[1,2-c]pyridazinones (1-23) and a benzo[h]cinnolinone (24), which were designed as rigid structural modifications of 5-alkyl-4,5-dihydro-6-[4-N-substituted phenyl]-3(2H)-pyridazinones (ib-d), were synthesized and evaluated for positive inotropic activity. Most of these tricyclic pyridazinones (1-11, 14-15, 22-23) demonstrated potent positive inotropic activity comparable
Substituted-3H-indeno[1,2-c]pyridazin-3-ones, substituted-3H-indeno[1,2-c]pyridazin-3-thiones, and pharmaceutically acceptable salts thereof are disclosed. Methods of preparing the same are also disclosed. The compounds are useful as cardiotonic and antihypertensive agent.