Abstract: The present invention relates to a process for the preparation of a 5-methyl-3-heteroaryl-2H,5H-1,3-oxazino[5,6-c] [1,2] benzothiazine-2,4-(3H)-dione 6,6-dioxide of the general formula I: ##STR1## in which R represents a heteroraryl radical, preferably substituted or unsubstituted pyrimidinyl or pyridyl, of the type consisting in reacting an amide of the general formula II: ##STR2## in which R.sup.1 represents a heteroarylamino radical, preferably substituted or unsubstituted pyrimidinylamino or pyridylamino, with a compound of the general formula III: ##STR3## in which R.sup.2 represents a C.sub.1 to C.sub.4 lower alkyl radical such as methyl or ethyl, an aryl radical such as phenyl, or an alkylaryl radical such as benzyl, wherein the reaction is carried out in an organic solvent selected from the group comprising pyridine, substituted pyridines such as 4-dimethylaminopyridine, 4-(pyrrolidin-1-yl)pyridine and 2,6-ditert.-butyl-4-methylpyridine, and mixtures thereof.

Abstract: The present invention relates to new 1-substituted derivatives of 6-fluoro-7-(pyrrol-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid, their preparation and their application as drugs.The 1-substituted derivatives of 6-fluoro-7-(pyrrol-1-yl)-1,4-dihydro-4-oxoquinoline-3-carboxylic acid according to the invention correspond to the general formula I: ##STR1## in which: R represents a methyl radical, a 2-hydroxyethyl radical, a vinyl radical, a cyclopropylmethyl radical, a propyl radical, a cyclopropyl radical, a 2-fluoroethyl radical, a methylamino radical or an ethylamino radical, as well as their physiologically acceptable alkali metal or alkaline earth metal salts.They are useful as antimicrobial agents, in particular as antibacterial and fungistatic agents.

Abstract: This invention relates to new derivatives of oxazinobenzothiazine-6,6-dioxide, to a process for the production thereof and to the use thereof as medicaments.The new derivatives according to the present invention correspond to the general formula I: ##STR1## wherein: R represents a linear or branched lower C.sub.1 -C.sub.4 alkyl radical, in particular the methyl and ethyl radicals,X represents an oxygen atom or a sulphur atom, andHet represents a mono- or bicyclic unsaturated heterocycle containing a nitrogen heteroatom in the ortho position relative to the link between the said heterocycle and the nitrogen atom of the oxazine ring, the said heterocycle optionally containing one or two other additional heteroatoms selected from nitrogen, oxygen and sulphur, and also being able to be substituted by one or two methyl radicals.

Abstract: Derivatives of inner salts of aminopyridinium hydroxide and corresponding salts thereof comprising the general formuale I and II ##STR1## in which: R.sub.1 as selected from the group consisting of a hydrogen and a radical 2-furyl-methyl-amino;R.sub.2, R.sub.4 and R.sub.6 are all selected from the group consisting of a hydrogen atom, a C.sub.1 -C.sub.1 linear or branched lower alkyl radical and a phenyl radical;R.sub.3 is selected from the group consisting of a hydrogen or a carbamyl radical;R.sub.5 represents a hydrogen; andX.crclbar. represents a monobasic anion of a pharmaceutically acceptable acid.

Abstract: Derivatives of p-chloroacetophenone oxime, the preparation thereof and the use thereof as medicaments.The compounds of the invention correspond to the general formula I ##STR1## wherein R.sub.1 and R.sub.2 each represent a lower alkyl radical, preferably a C.sub.1 to C.sub.4 radical, or, in association with the nitrogen atom to which they are linked, form a saturated heterocyclic group, and the physiologically acceptable acid addition salts.The compounds of the invention are useful as medicaments and particularly as analgesics, antipyretics, anti-inflammatory agents and antitussives.