Fused dibenzo imidazolo compounds, compositions and use

US4313931A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Gerhard Walther · Bingen, DE
• Claus Schneider · Ingelheim am Rhein, DE
• Karl-Heinz Weber · Gau-Algesheim, DE
• Armin Fugner · Gau-Algesheim, DE

Key dates

• Filing date: Feb 23, 1981
• Grant date: Feb 2, 1982
• Expiry date: Feb 23, 2001

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D513/04
• WIPO field: Pharmaceuticals
• WIPO sector: Chemistry

Abstract

This invention relates to a compound of the formula ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, and R.sub.4, which may be the same or different, each represent a hydrogen or halogen atom or an alkyl or alkoxy group of from 1 to 6 carbon atoms; PA0 R.sub.5 and R.sub.6, which may be the same or different, each represent a hydrogen atom, an alkyl group of from 1 to 6 carbon atoms, or an alkenyl group of from 3 to 6 carbon atoms, or R.sub.5 and R.sub.6 together with the nitrogen atom to which they are attached represent a pyrrolidino, piperidino, or morpholino group; and PA0 X represents oxygen, sulfur, or a methylene group, or a non-toxic, pharmacologically acceptable acid addition salt thereof, or a racemate, enantiomer, or mixture of enantiomers thereof. The compounds of Formula I are useful in pharmaceutical compositions for treating bronchial asthma and allergic bronchitis.