PIPERIDINE COMPOUNDS, THEIR PREPARATION AND USE

摘要

Novel piperidine compounds having formula (I), wherein R3 is 3,4-methylenedioxyphenyl, phenyl, naphthyl, or a 5 or 6 membered heterocyclic group containing one or two N, O or S - atoms being saturated, partly saturated or aromatic which are optionally substituted with one or more halogen, amino, C¿1-6?-alkyl mono- or disubstituted amino, C1-6-alkoxy, cyano, mono- or poly halogenated C1-6-alkyl, C2-6-alkenyl, C1-6-alkyl, C3-5-alkylene, trifluoromethoxy, hydroxy, hydroxy C1-4-alkyl, or trifluoromethyl; n is 0 to 4; R?1¿ is hydrogen, straight or branched C¿1-8?-alkyl, C1-8-alkoxy-C1-8-alkyl, C3-8-cycloalkyl, C2-6-alkenyl, C4-8-cycloalkylalkyl, acetyl or C2-6-alkenyl; X is one or more amino, NO2, C1-6-alkyl mono- or disubstituted amino, C1-8-alkanoylamino, carboxy, C1-6-alkyl mono- or disubstituted ureido, C1-6-alkyl substituted with amino which are optionally mono- or disubstituted with C1-6-alkyl, unsubstituted carbamoyl or C1-6-alkyl optionally substituted with phenyl and/or hydroxy N-mono or disubstituted carbamoyl, unsubstituted sulfamoyl, C1-6-alkyl N-substituted sulfamoyl, C1-6-alkyl S-substituted sulfamoyl, C1-6-alkyl N-and S-substituted sulfamoyl, or a 5 or 6 membered heterocyclic group containing one or two N, O or S - atoms being saturated, partly saturated or aromatic, the heterocyclic group can be fused to the ring and, when Y is NR and/or n is 1 to 4 X is halogen, C1-6-alkyl, C2-6-alkenyl, C3-8-cycloalkyl, C4-8-cycloalkylalkyl, C1-6-alkoxy, cyano, mono- or poly halogenated C1-6-alkyl, hydroxy or hydrogen; Y is O, S or NR wherein R is hydrogen or C1-5-alkyl, or a salt thereof with a pharmaceutically-acceptable acid. The novel compounds are useful in the treatment of anoxia, traumatic injury, ischemia, migraine, epilepsy and other neurodegenerative diseases.