11-Aminoalkyl-pyridobenzodiazepinones and salts thereof

US4021557A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Gunther Schmidt · Biberach, DE
• Gunther Engelhardt
• Sigfrid Puschmann

Key dates

• Filing date: Apr 23, 1975
• Grant date: May 3, 1977
• Expiry date: Apr 23, 1995

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D487/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, straight or branched alkyl of 1 to 3 carbon atoms or benzyl, PA1 R.sub.2 is straight or branched alkyl of 1 to 3 carbon atoms, or PA1 R.sub.1 and R.sub.2, together with each other and the nitrogen atom to which they are attached, are pyrrolidino, piperidino or hexamethyleneimino, PA1 A and B are each nitrogen or methylidenyl (=CH-), but other than both nitrogen or methylidenyl at the same time, and PA1 n is 2 or 3, And non-toxic, pharmacologically acceptable acid addition salts thereof; the compounds as well as the salts are useful as bronchospasmolytics.