Abstract: Compounds of the formula I ##STR1## wherein m and n are 0, 1 or 2, X represents oxygen, imino, benzylimino, or morpholinoethylimino, Y represents CO, CONH, COO or SO.sub.2, and NR.sub.1 R.sub.2 represents a dimethylamino, diethylamino, dipropylamino, dibutylamino, allylamino, isobutenylamino, cyclopentylamino, cyclohexylamino, cycloheptylamino, cyclooctylamino, N-methyl N-cyclopentylamino, N-methyl N-cyclohexylamino, N-allyl N-cyclohexylamino, adamantylamino, diethoxyethylamino, dimethylaminoethylamino, dimethylaminopropylamino, N-methyl N-dimethylaminopropyl-amino, benzylamino, 3,4,5-trimethoxybenzylamino, phenethylamino, p-chlorophenethylamino, tetrahydrofurfurylamino, tetrahydropyranylmethylamino, pyrrolidino, isoxazolidinyl, piperidino, 4-hydroxypiperidino, 4-m-chlorophenyl-4-hydroxypiperidino, homopiperidino, 1,2,3,6-tetrahydropyridyl, morpholino, 2-methylmorpholino, 2,6-dimethylmorpholino, 2-morpholinoethylamino, thiamorpholino, piperazino, 4-methylpiperazino, 4-(.alpha.

Abstract: There are provided compounds of the general formula ##STR1## in which Ar represents a phenyl group which is unsubstituted or substituted by a halogen atom or a lower alkyl group, or represents a thienyl group, R.sub.1 represents a hydrogen or halogen atom or, when the Ar--CO-- grouping is in the meta-position with respect to the nitrogen atom, a lower alkyl group, R.sub.2 represents a hydrogen atom, or a lower alkyl or an acyl group, and R.sub.3 represents a hydrogen atom, a lower alkyl or a phenyl group and a physiologically acceptable salt thereof.The compounds of the general formula I and their salts have therapeutic utility, especially as analgesics.

Abstract: Compounds of the formula I ##STR1## wherein R.sub.1 represents a hydrogen or fluorine atom, and R.sub.2 represents an alkyl group containing 2 to 6 carbon atoms, or a cycloalkyl or cycloalkyl-alkyl group containing 5 to 8 carbon atoms, each of these groups being substituted by one or two hydroxy groups or an oxo group and, if desired, also by a 4-(m-trifluoromethylphenyl)-piperazino or 4-(3-trifluoromethyl-4-fluoro-phenyl)-piperazino group with the proviso that, when R.sub.1 represents a hydrogen atom, R.sub.2 does not represent a monohydroxyalkyl group, and their pharmaceutically acceptable acid addition salts are novel and have therapeutic use, notably in the region of the central nervous system and in the cardiovascular region.