A compound, having the general formula as follows: wherein: - the Ar group is selected from among the phenyl, pyridyl, thiophenyl, furanyl, benzothiophenyl, benzofuranyl and naphthalenyl groups, possibly substituted by one or more substituents selected from among: - the halogen atoms, - the -OH group, - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, and - the aryl groups comprising from 6 to 30 carbon atoms and the heteroaryl groups comprising from 1 to 30 carbon atoms, possibly substituted; - the R N and R N' groups, together with the carbon atoms to which they are bound, form a group selected from among the tropane, quinuclidine and octahydro-quinolizine groups having the following formulae: said azacycloalkane group being possibly substituted by one or more groups selected from among: - the halogen atoms, - the -OH group, and - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, - R 1 is a group selected from: H or NH 2; as well as the pharmaceutically acceptable salts thereof, the hydrates or polymorphic crystalline structures, racemates, diastereoisomers or enantiomers thereof, wherein the possibly substituted "alkyl", "aryl" and "heteroaryl" radicals as mentioned above may be substituted by one or more substituents chosen from the group consisting of: CHO, amino, hydroxy, halogen, haloalkyl, carboxyl, alkyl, (hetero)aryl, cycloalkyl, heterocycloalkyl, alkaryl, alkoxy, alkylthio, alkylcarbonyl, aminocarbonyl, alkylcarboxyl, alkylamino, aryloxy, arylalkoxy, cyano, alkylsulfonyl, nitro, and carboxyalkyl. - the Ar group is selected from among the phenyl, pyridyl, thiophenyl, furanyl, benzothiophenyl, benzofuranyl and naphthalenyl groups, possibly substituted by one or more substituents selected from among: - the halogen atoms, - the -OH group, - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, and - the aryl groups comprising from 6 to 30 carbon atoms and the heteroaryl groups comprising from 1 to 30 carbon atoms, possibly substituted; - the halogen atoms, - the -OH group, - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, and - the aryl groups comprising from 6 to 30 carbon atoms and the heteroaryl groups comprising from 1 to 30 carbon atoms, possibly substituted; - the R N and R N' groups, together with the carbon atoms to which they are bound, form a group selected from among the tropane, quinuclidine and octahydro-quinolizine groups having the following formulae: said azacycloalkane group being possibly substituted by one or more groups selected from among: - the halogen atoms, - the -OH group, and - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, - the halogen atoms, - the -OH group, and - the linear or branched alkyl and alkoxy groups comprising from 1 to 10 carbon atoms, possibly substituted, - R 1 is a group selected from: H or NH 2; as well as the pharmaceutically acceptable salts thereof, the hydrates or polymorphic crystalline structures, racemates, diastereoisomers or enantiomers thereof, wherein the possibly substituted "alkyl", "aryl" and "heteroaryl" radicals as mentioned above may be substituted by one or more substituents chosen from the group consisting of: CHO, amino, hydroxy, halogen, haloalkyl, carboxyl, alkyl, (hetero)aryl, cycloalkyl, heterocycloalkyl, alkaryl, alkoxy, alkylthio, alkylcarbonyl, aminocarbonyl, alkylcarboxyl, alkylamino, aryloxy, arylalkoxy, cyano, alkylsulfonyl, nitro, and carboxyalkyl.