Laboratorios Del Dr. Esteve S.a.

Augusto C Pinol

Jordi F Constansa

Juan P Corominas

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.

Substituted azetidinylpyridone naphthyridine carboxylic acid derivatives

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.4, identical or different, and can also form a part of another ring, aromatic or not, represent a hydrogen atom, a halogen, a lower alkyl radical, a nitro radical, a hydroxyl radical, an oxo radical, an alkoxy radical, a cyano radical, a carboxylic radical, a carboxamido radical, an alkyl carboxylate radical, an aryle or substituted aryl radical, or an amino radical, of general formula III: ##STR3## in which R.sub.5 and R.sub.6, identical or different, represent a hydrogen atom, an alkyl radical, an aryl radical, a heteroaryl radical, an alkenyl radical, an alkylcarboxy radical, an arylcarboxy radical, an alkylsulfonyl radical or an arylsulfonyl radical.

Derivatives of pyrimidinyl-piperazinyl-alkyl azoles with anxiolytic

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.

7-(imidazol-1-yl)-1,

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.

Substituted azetidinylisothiazolopyridone derivatives, their preparation

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.

Substituted 1-diphenylmethyl azetidines

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;

Benzimidazolesulfonamides and imidazopyridinesulfonamides, and their

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.

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Barcelona, Spain

Augusto C Pinol