Pyridyl-1,2,5-oxadiazolecarboxamide-2-oxides

US5374640A · kind A · utility

Assignee

• Cassella Aktiengesellschaft · DE

Inventors

• Karl Schonafinger · Alzenau, DE
• Helmut Bohn · Schöneck, DE

Key dates

• Filing date: May 25, 1993
• Grant date: Dec 20, 1994
• Expiry date: May 25, 2013

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D271/08
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

The present invention relates to pyridyl-1,2,5-oxadiazolcarboxamide-2-oxides of the general formula I ##STR1## in which one of the radicals R.sup.1 and R.sup.2 represents pyridyl and the other represents ##STR2## and R.sup.3 and R.sup.4 are defined as indicated in claim 1, processes for their preparation and their use.