Dihydropyridazinone derivatives, a process for their preparation and pharmaceutical preparations containing these compounds

US4921856A · kind A · utility

Assignee

• Heumann Pharma GmbH · DE

Inventors

• Helmut Schickaneder · Eckental, DE
• Peter Morsdorf · Langenzenn, DE
• Volker Pfahlert · Munich, DE
• Heidrun Engler · Cadolzburg, DE
• Kurt H. Ahrens · Nürnberg, DE

Key dates

• Filing date: Apr 1, 1988
• Grant date: May 1, 1990
• Expiry date: Apr 1, 2008

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D403/12
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

New dihydropryidazinone derivatives corresponding to the following formula ##STR1## and a process for their preparation and pharmaceutical preparations containing these compounds are described. These compounds are effective positively inotropic substances with an improved therapeutic profile.