86798-72-3

Upstream product

• 24912-35-4 6-(4-aminophenyl)pyridazine-3(2H)-one 
• 628-36-4 diformylhydrazine 
• 21282-90-6 6-(4-aminophenyl)-4,5-dihydro-3(2H)-pyridazinone 

Relevant academic research and scientific papers

Substituted 4,5-dihydro-6-(substituted)-phenyl-3(2H)-pyridazinones and 6-(substituted) phenyl-3(2H)-pyridazinones

Substituted 4,5-dihydro-6-(substituted)phenyl-3(2H)-pyridazinone compounds and 6-(substituted)phenyl-3(2H)-pyridazinone compounds and pharmaceutically acceptable salts thereof are useful as cardiotonic and antihypertensive agents. Said compounds cause a significant increase in myocardial contractility in the dog. Said compounds also cause a decrease in blood pressure in the spontaneously hypertensive rat. Said compounds are produced by reacting substituted γ-oxobenzenebutanoic acids with suitably substituted hydrazines to provide 4,5-dihydro-6-(substituted)phenyl-3(2H)-pyridazinones which are dehydrogenated to 6-(substituted)phenyl-3(2H)-pyridazinones. Both the intermediate 4,5-dihydro-6-(substituted)phenyl-3(2H)-pyridazinones and the 6-(substituted)phenyl-3(2H)-pyridazinones are useful as cardiotonic and antihypertensive agents.

Cardiotonic Agents. 2. Synthesis and Structure-Activity Relationships of 4,5-Dihydro-6--3(2H)-pyridazinones: A New Class of Positive Inotropic Agents

A series of 4,5-dihydro-6--3(2H)-pyridazinones and related compounds were synthesized and evaluated for positive inotropic activity.Most members of this series produced dose-related increases in myocardial contractility that we