Abstract: Compounds of formula (I): wherein: R1 represents an alkyl, cycloalkyl or cycloalkylalkyl group, R2 represents a linear or branched (C1-C6)alkyl group, and n represents from 1 to 6. Medicaments.

Abstract: Compounds of formula (I): wherein: R1 represents an alkyl, cycloalkyl or cycloalkylalkyl group, R2 and R3, together with the nitrogen atom carrying them, form a heterocycle having from 5 to 8 ring members, and n represents from 2 to 6. Medicinal products containing the same which are useful in treating disorders of the to melatoninergic system.

Abstract: Compounds of formula (I): wherein: R1 represents an alkyl, cycloalkyl or cycloalkylalkyl group, R2 represents a linear or branched (C1-C6)alkyl group, and n represents from 1 to 6.

Abstract: Compounds of general formula (I): ##STR1## in which: R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote a hydrogen atom, a halogen atom or a lower alkyl, lower alkenyl, lower alkyloxy or lower alkenyloxy group, optionally substituted with one or more halogen atoms,R.sub.5 denotes a carboxyl, (lower alkyloxy)carbonyl, (lower alkenyloxy)carbonyl or (lower alkynyloxy)-carbonyl,their isomers, stereoisomers and diastereoisomers, and also their addition salts with a pharmaceutically acceptable base.Medicinal products.

Abstract: Compounds of general formula (I): ##STR1## in which: R denotes a hydrogen atom, a halogen atom or a hydroxy, lower alkyl, lower alkyloxy, carboxyl, (lower alkyloxy)carbonyl, (lower arylalkyloxy)carbonyl, aminocarbonyl, (lower mono- or dialkyl)aminocarbonyl or (lower arylalkyl)aminocarbonyl group, an aminocarbonyl group N-substituted with a heterocyclic radical, or a thio, (lower alkyl)thio, sulfonyl or (lower alkyl)sulfonyl group,R.sub.1, R.sub.2, R.sub.3 and R.sub.4, which may be identical or different, denote a hydrogen atom, a halogen atom or a lower alkyl, lower alkenyl, lower alkyloxy or lower alkenyloxy group, optionally substituted with one or more halogen atoms,their isomers, enantiomers, diastereoisomers and also, when R denotes a carboxyl, their addition salts with a pharmaceutically acceptable base and, when R contains a basic group, their addition salts with a pharmaceutically acceptable acid.