Benzimidazole derivatives and process for the production thereof

US4011322A · kind A · utility

Assignee

• SCHERING CORPORATION · US

Inventors

• Dieter Rahtz · Berlin, DE
• Hans Wendt · Berlin, DE
• Henning Koch

Key dates

• Filing date: Jul 28, 1975
• Grant date: Mar 8, 1977
• Expiry date: Jul 28, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D235/10
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Benzimidazoles of the formula ##STR1## wherein R.sub.1 is o-hydroxyphenyl, a p-chlorophenyl, or p-fluorophenyl, and R.sub.2 is an alkyl of 2-4 carbon atoms, and physiologically acceptable acid addition salts thereof possess topical anti-inflammatory activity.