11-Oxo-11H-pyrido[2,1-b]quinazoline-2-carboxylic acid and salts thereof, antiallergic compositions containing it and methods of suppressing allergic reactions with it

US4332802A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Kurt Schromm · Ingelheim am Rhein, DE
• Anton Mentrup · Mainz, DE
• Ernst-Otto Renth · Ingelheim am Rhein, DE
• Armin Fugner · Gau-Algesheim, DE

Key dates

• Filing date: Nov 5, 1980
• Grant date: Jun 1, 1982
• Expiry date: Nov 5, 2000

Classification

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

Abstract

This invention relates to the novel compound 11-oxo-11H-pyrido[2,1-b]quinazoline-2-carboxylic acid of the formula ##STR1## and non-toxic, pharmacologically acceptable salts thereof, as well as to pharmaceutical composition containing these compounds as active ingredients, and methods of using them as antiallergics.