4-Hydroxy-2H-1,2-benzothiazine-3-carboxamide-1,1-dioxides and salts thereof

US4233299A · kind A · utility

Assignee

• Boehringer Ingelheim GmbH · DE

Inventors

• Gunter Trummlitz · Warthausen, DE
• Wolfhard Engel
• Ernst Seeger · Biberach, DE
• Gunther Engelhardt

Key dates

• Filing date: Dec 6, 1978
• Grant date: Nov 11, 1980
• Expiry date: Dec 6, 1998

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07D513/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Compounds of the formula ##STR1## wherein R.sub.1 is hydrogen, methyl or ethyl; PA1 R.sub.2 is methyl, ethyl or n-propyl; and PA1 Y is hydrogen, methyl, methoxy, fluorine or chlorine; and non-toxic, pharmacologically acceptable salts thereof formed with an inorganic or organic base. The compounds as well as their salts are useful as antiphlogistics.