Abstract: The present invention relates to new azetidine derivatives of substituted azetidinylpyridonecarboxylic acids, of 1,4-dihydro-4-oxo-3-quinolinecarboxylic, 4-oxo-1,8-naphthyridine-3-carboxylic and 2,3-dihydro-7-oxo-7H-pyrido[1,2,3-de][1,4]benzoxazine-6-carboxylic acids, represented by the general formula I: ##STR1## The present invention also relates to therapeutically acceptable salts of these compounds, a process for preparing them and their application as medicinal products.

Abstract: The present invention relates to heterocyclic compounds characterized in that they correspond to the general formula I: ##STR1## in which R.sub.1 represents a hydrogen atom or a halogen, n can have the values 1 to 6 and Het represents an azole, or one of its derivatives selected from among imidazole, indazole, tetrahydroindazoles, pyrazole or pyrazoline and which can be represented by the general formula II: ##STR2## in which A and B, always different, represent a carbon atom or a nitrogen atom, the dashed line indicates the possible presence of a double bond between positions 4 and 5, and R.sub.2, R.sub.3 and R.sub.

Abstract: Novel heterocyclic compounds, characterized in that they have formula (I) ##STR1## in which R represents a hydrogen atom, a lower alkyl radical or a phenyl or substituted phenyl radical and R.sub.1 represents an alkyl radical or an aryl radical, and their physiologically acceptable salts.

Abstract: The present invention relates to substituted azetidinylisothiazolopyridone derivatives which correspond to the general formula I: ##STR1## or its tautomeric formula ##STR2## It also relates to a process for preparing them and to their application as a medicinal product.

Abstract: New azetidines, characterized in that they correspond to the general formula (I) ##STR1## in which R.sub.3 represents an amino radical, an alkylamino radical, a dialkylamino radical, a cycloalkylamino radical, an acylamino radical, an alkylacylamino radical, an aminomethyl radical, an alkylaminomethyl radical, an acylaminomethyl radical or an alkylacylaminomethyl radical, in which radicals each acyl fragment may be substituted with one or more halogen, especially fluorine, atoms; and R.sub.1, R.sub.2, R.sub.4, R.sub.5 and R.sub.6 represent a hydrogen atom or a lower alkyl radical, with the proviso that at least one of them represents a lower alkyl radical, and also their salts.

Abstract: Benzimidazole-2-sulfonamide and imidazopyridine-2-sulfonamide derivatives corresponding to the general formula: ##STR1## and their pharmaceutically acceptable salts in which: Z.sup.1 to Z.sup.4 represent a nitrogen atom or a substituted or unsubstituted carbon atom;R.sup.3 represents a hydrogen atom or an alkyl, aryl, heteroaryl, alkylaryl, hydroxyalkyl, alkylheteroaryl, mono-, bi- or tri-cycloalkyl, alkylamino, N-alkyl-alkylamino, alkylcarboxyalkyl, acyl, alkylthioalkyl, alkylsulfinylalkyl or alkylsulfonylalkyl, alkylthioaryl, alkylsulfinylaryl or alkylsulfonylaryl, alkylthioheteroaryl, alkylsulfinylheteroaryl or alkylsulfonylheteroaryl, alkylthioalkylaryl, alkylsulfinylalkylaryl or alkylsulfonylalkylaryl, alkylthioalkylheteroaryl, alkylsulfinylalkylheteroaryl or alkylsulfonylalkylheteroaryl, halogenoalkyl, cyanoalkyl, N-alkylaryl-alkylamino, N-alkyl-N-alkylaryl-alkylamino, N,N-dialkyl-alkylamino, alkylpiperazinyl, alkylpiperidinyl or alkylmorpholinyl radical;X represents --(CHR.sup.8).sub.n --(CHR.sup.9).

Abstract: Benzimidazole-2-sulfonamide and imidazopyridine-2-sulfonamide derivatives corresponding to the general formula I: ##STR1## and their pharmaceutically acceptable salts, especially those of the formula in which:Z.sup.1 to Z.sup.4 represent a nitrogen atom or a substituted or unsubstituted carbon atom;R.sup.1 and R.sup.2 represent a hydrogen atom or an alkyl, alkylaryl, alkylcarbonylalkyl, alkylcarbonylaryl, alkylcarbonylheteroaryl, cycloalkyl, carboxyalkyl, acyl or nitro radical, or alternativelyR.sup.1 and R.sup.2 can together form a linkage represented by a group X;R.sup.

Abstract: The present invention relates to new heterocyclic compounds, derivatives of 7-(1-azetidinyl)-1,4-dihydro-4-oxo-3-quinolinecarboxylic acids, characterized in that they correspond to formula (I) ##STR1## The invention also relates to the preparation of these compounds and their applications as medicines.

Abstract: The present invention relates to new benzimidazole derivatives, to the process for preparing them and also to their application as medicinal products.The 2-alkylbenzimidazole derivatives according to the present invention correspond to the general formula I ##STR1## and also their therapeutically acceptable salts, in which the substituents are as defined in the specification.