Cardiotonic agents. 2. Synthesis and structure-activity relationships of 4,5-dihydro-6-[4-(H-imidazol-1-yl)phenyl]-3(2H)-pyridazinones: a new class of positive inotropic agents
作者:Ila Sircar、Bradley L. Duell、George Bobowski、James A. Bristol、Dale B. Evans
DOI:10.1021/jm00148a006
日期:1985.10
substituent at the 5-position of 1 (CI-914) produced the most potent compound in this series (11, CI-930). Compound 1 is more potent than amrinone whereas compound 11 is more potent than milrinone. The inotropic effects of 1 and 11 are not mediated via stimulation of beta-adrenergic receptors. Selective inhibition of cardiac phosphodiesterase fraction III represents the principal component of the positive
The reaction of pyridazinones with nucleophiles. An unusual reaction with cyanide
作者:Edward W. Badger、Walter H. Moos
DOI:10.1002/jhet.5570230551
日期:1986.9
Studies on the synthesis of pyridazinone analogues of pyridone cardiotonics are reported. The synthetic scheme involves the reaction of pyridazinones and chloropyridazinones with nucleophiles. Addition occurred twice with cyanide as the nucleophile, thus providing a novel dicyanopyridazinone.