[1,3]-Dioxolo[4,5-f]benzimidazoles and [1,4]-dioxino[2,3-f]benzimidazoles

US4560693A · kind A · utility

Assignee

• Byk Gulden Lomberg Chemische Fabrik GmbH · DE

Inventor

• Georg Rainer · Konstanz, DE

Key dates

• Filing date: May 1, 1984
• Grant date: Dec 24, 1985
• Expiry date: May 1, 2004

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D491/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Tricyclic ethers of the general formula I ##STR1## wherein R represents a bond and R1 represents a 1-2C-alkylene radical which is completely or partly substituted by fluorine, or a chlorotrifluoroethylene radical, or R and R1 each represent a difluoromethylene radical, R2 represents hydrogen or a 1-3C-alkyl radical, R3 represents hydrogen or a 1-3C-alkyl or 1-3C-alkoxy radical, R4 represents hydrogen or a 1-3C-alkyl radical and n represents the number 0 or 1, and their salts are new compounds with a marked protective effect on the stomach.