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US 4,291,032 AGranted
Thiazolo(3,2-C)benzoxazine derivatives
AssigneeRhone-Poulenc Industries
InventorsChristian Berger, Daniel Farge, Claude Moutonnier, Gerard Wolff
Life of this patent
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Abstract
New thiazolo[3,2-c]-1,3-benzoxazine derivatives of the general formula (I), in which X is oxygen or sulfur, R.sub.1 and R.sub.2, which are identical or different, are hydrogen or halogen atoms or alkyl, alkoxy, alkylthio or trifluoromethyl radicals, in the 7-, 8-, 9- or 10-position, and R.sub.3 is a hydrogen atom or a carboxyl radical, their salts, if appropriate, their preparation and the medicaments in which they are present. These new derivatives are particularly useful as analgesic agents. ##STR1##
Claims6
A thiazolo[3,2-c]-1,3-benzoxazine derivative of the formula:
- ##STR5## in which X represents an oxygen or sulfur atom, the symbols R.sub.1 and R.sub.2, which are identical or different, each represent a hydrogen or halogen atom or an alkyl, alkoxy, alkylthio or trifluoromethyl radical, in the 7-, 8-, 9- or 10-position, and R.sub.3 represents a hydrogen atom or a carboxyl radical, the alkyl radicals and portions being linear or branched and containing 1 to 4 carbon atoms, and also its metal salts and its addition salts with nitrogen-containing organic bases, in the case where R.sub.3 represents a carboxyl radical, in its diastereoisomeric forms and mixtures thereof.
Dependencies are inferred from the claim text.