N-phenyl-N-acetamidoglycinamides, their preparation and medicaments containing them

Compounds of formula:

• ##STR12## in which R.sub.1 represents a hydrogen atom, an alkyl alkoxycarbonyl or a phenyl radical, or a phenyl radical substituted by at least one substituent chosen from halogen atoms, alkyl, alkoxy, alkylthio, nitro and amino radicals,
• R.sub.2 represents a hydrogen atom or an alkyl radical, or an alkyl radical substituted by an alkoxycarbonyl radical,
• R.sub.3 represents an alkyl, phenylalkyl, indanyl, cycloalkylalkyl, phenyl, or phenyl substituted by at least one substituent chosen from halogen atoms, alkyl, alkoxy, alkylthio and dialkylamino radicals, or quinolyl radical, or
• R.sub.2 and R.sub.3 form together with the nitrogen atom to which they are attached a saturated or unsaturated monocyclic or polycyclic heterocycle containing 4 to 9 carbon atoms and at least one heteroatom chosen from O, N, and S and which is unsubstituted or substituted by at least one alkyl, alkoxycarbonyl, dialkylcarbamoyl, phenyl or alkoxy radical or, in combination with a carbon atom of the heterocycle, a monocyclic spiro ring having 4 or 5 members and which optionally contains at least one heteroatom, chosen from,
• R.sub.4 represents a phenyl radical, or a phenyl radical substituted by at least one substituent chosen from halogen atoms, alkyl, alkoxy, alkylthio radicals, naphthyl, indolyl, quinolyl radical or a phenylamino and phenylene in which the phenyl ring is substituted by at least one substituent chosen from halogen atoms, alkyl, alkoxy, alkylthio, hydroxyl, nitro, amino, acyl, cyano, sulphamoyl, trifluoromethylsulphonamido, carbamoyl, benzoyl, carboxyl, alkoxycarbonyl, phenylhydroxymethyl, piperidino, hydroxyiminoalkyl, alkoxyiminoalkyl, hydroxyaminocarbonyl, alkoxyaminocarbonyl, 5-tetrazolyl, 5-terazolylalkyl, alkylsulphinyl, monohydroxyalkyl or polyhydroxyalkyl, sulpho, --alk--O--CO--alk, --alk--O--alk, --alk--COOX, --O--alk--COOX, --alk'--COOX, --CH.dbd.CH--COOX, --CO--COOX, --alk--SO.sub.3 H, --CH.dbd.CH--alk', --C(.dbd.NOH)--COOX and --S--alk--COOX radicals,
• X represents a hydrogen atom or an alkyl radical,
• alk represents an alkyl or alkylene radical, and
• alk' represents a hydroxyalkylene or hydroxyalkyl radical,
• with the exception of compounds in which R.sub.1 represents a hydrogen atom, R.sub.2 and R.sub.3 each represent an alkyl radical or R.sub.2 and R.sub.3 form, with the nitrogen atom to which they are attached, a 1-pyrrolidinyl radical unsubstituted or substituted by an alkyl radical and R.sub.4 represents a naphthyl or indolyl radical or a phenylamino radical in which the phenyl ring is unsubstituted or substituted by an alkyl, alkoxy, nitro, hydroxyl or alkylthio radical or by one or two halogen atoms, with the proviso that the acyl radicals contain 2 to 4 carbon atoms, the alkyl, alkylene and alkoxy radicals and the alkyl, alkylene and alkoxy moieties containing 1 to 4 carbon atoms in a straight or branched chain and the cycloalkyl radicals contain 3 to 6 carbon atoms, as well as the racemates and enantiomers thereof when they contain at least one asymmetric center and the salts thereof.