4,5-DIHYDRO-6- 2- 4- 1H-IMIDAZOL-1-YL PHENYL -ETHENYL -3 2H PYRIDAZINONES

摘要

6-[2-[4-[1H-imidazol-1-yl)phenyl]alkylenyl or alkylene-3(2H)-pyridazinones of the following formula I …… and pharmaceutically acceptable acid addition salts are useful as cardiotonic and antihypertensive agents. The pyridazinone radical may be 4,5-dihydro substituted. …Pharmaceutical compositions comprising the compounds, and a process for the preparation of the compounds are also disclosed.