1-PHENYLALKYL-1,2,3,6-TETRAHYDROPYRIDINES FOR TREATING ALZHEIMER'S DISEASE

摘要

The invention concern compounds of formula (I) in which Y represents -CH- or -N-; R1 represents hydrogen, a halogen, a CF3 group, (C1-C4)alkyl or (C1-C4)alcoxyl; R2 represents a methyl or ethyl group; R3 and R4 each represent hydrogen or a (C1-C3)alkyl; X represents (a) a (C1-C6)alkyl; a (C1-C6)alcoxyl; a (C3-C7)carboxyalkyl; a (C1-C4)alcoxycarbonyl(C1-C6)alkyl; a (C3-C7)carboxyalcoxyl; or a (C1-C4)alcoxycarbonyl(C1-C6)alcoxyl; (b) a radical selected among a(C3-C7)cycloalkyl, (C3-C7)cycloalkyloxy, (C3-C7)cycloalkylmethyl, (C3-C7)cycloalkylamino and cyclohexenyl, said radical can be substituted by a halogen, hydroxy, (C1-C4)alcoxy, carboxy, (C1-C4)alcoxycarbonyl, amino, mono - or di-(C1-C4) alkylamino; or (c) a group selected among a phenyl, phenoxy, phenylamino, N-(C1-C3)alkylphenylamino, phenylmethy l, phenylethyl, phenylcarbonyl, phenylthio, phenylsuphonyl, phenylsulphinyl or styryl, said group can be mono- or poly- substituted by a halogen, CF3, (C1-C4)alkyl, (C1-C4)alcoxy, cyano, amino, mono- or di-(C1-C4)alkylamino, (C1-C4)acylamino, carboxy, (C1- C4)alcoxycarbonyl, aminocarbonyl, mono- or di-(C1-C4)alkylaminocarbonyl, amino(C1-C4)alkyl, hydroxy(C1-C4)alkyl or halogeno(C1-C4)alkyl. The invention also concerns a method for preparing them and the pharmaceutical compositions containing them. Thes e compounds have a neurotrophic and neuroprotecting activity.