Abstract: Compounds of general formula I, ##STR1## in which: R.sub.1 denotes a hydrogen atom or, with the proviso, however, that the amino radical is at the 7-position, a linear or branched alkyl radical containing 1 to 4 carbon atoms,R.sub.2 denotes a hydrogen atom or, with the proviso, however, that the amino radical is at the 6-position, a linear or branched alkyl radical containing 1 to 4 carbon atoms,R.sub.3 and R.sub.

Abstract: The invention relates to new 2-(2,3-dihydro-2-oxo-3-benzofuranyl)acetic acid compounds of general formula I: ##STR1## in which: R.sub.1 denotes a hydrogen atom, a linear or branched alkyl radical having 1 to 4 carbon atoms or a phenyl radical optionally substituted with a halogen atom or with an alkoxy radical containing 1 to 4 carbon atoms or an alkyl radical having 1 to 4 carbon atoms,R.sub.2 denotes a hydrogen or halogen atom, a hydroxyl radical, an alkyl radical having 1 to 4 carbon atoms or an alkoxy radical containing 1 to 4 carbon atoms,R denotes a hydroxyl radical, a linear or branched alkoxy radical having 1 to 4 carbon atoms, a benzyloxy radical or a radical of general formula A: ##STR2## in which: X and Y, which may be identical or different, each denote a linear or branched alkyl radical containing 1 to 5 carbon atoms, a radical of general formula A.sub.

Abstract: Compound of general formula I ##STR1## in which R.sub.1 and R.sub.2, which may be identical or different, each denote a hydrogen atom, a benzyl radical, a cyclohexylmethyl radical or a linear or branched alkyl radical containing from 1 to 10 carbon atoms, optionally substituted with a hydroxy radical, with a carboxy radical or with an alkoxy radical having 1 to 5 carbon atoms, with an alkoxycarbonyl radical having 2 to 6 carbon atoms, with an alkylphenyl radical having 7 to 16 carbon atoms or with a 2-alkylthienyl radical having 5 to 14 carbon atoms,R.sub.3 denotes a hydrogen atom or a linear or branched alkyl radical containing from 1 to 4 carbon atoms,A denotes a single bond or a methylene radical, or a radical of formula ##STR2## in which R.sub.4 is a linear or branched alkyl radical containing from 1 to 4 carbon atoms.

Abstract: The invention relates to 2,6-piperazinedione derivatives of general formula I ##STR1## in which: A and B each denote a methylene radical or a carbonyl radical with the proviso, however, that A and B never simultaneously denote the same radical,R.sub.1 denotes a diphenylmethyl radical optionally substituted on the benzene rings with a halogen atom, a cyclohexyl radical, a pyridylmethyl group, or a benzyl radical optionally substituted with a halogen atom or with an alkoxy radical containing from 1 to 4 carbon atoms,R.sub.2 denotes a pyrimidinyl radical or a phenyl radical optionally substituted with a halogen atom, with an alkyl radical having from 1 to 4 carbon atoms, with a trifluoromethyl radical or with an alkoxy radical containing from 1 to 4 carbon atoms,n is an integer from 2 to 4,and their addition salts with a pharmaceutically acceptable inorganic or organic acid.

Abstract: The invention relates to new acetamides derived from 2,3-dihydro-3-phenyl-2-benzofuranone, of general formula I ##STR1## in which: R.sub.1 denotes a hydrogen or halogen atom,R.sub.2 and R.sub.3, which may be identical or different, each denote a hydrogen atom or a linear or branched alkyl radical containing 1 to 4 carbon atoms, a benzyl radical optionally substituted with a halogen atom, with an alkoxy radical containing 1 to 4 carbon atoms or with an alkyl radical having 1 to 4 carbon atoms, or a 3,4-methylenedioxybenzyl radical, or form, together with the nitrogen to which they are attached, a 4-morpholinyl radical or a 1-piperazinyl radical.