5-HALO-TRYPTAMINE DERIVATIVES USED AS LIGANDS OF THE 5-HT6 AND/OR 5-HT7 SEROTONIN RECEPTORS, THEIR PREPARATION AND THEIR USE FOR PREPARATION OF PHARMACEUTICAL COMPOSITIONS

摘要

Compounds of formula (I) wherein R 1 and R 2 are the same or different are hydrogen or C 1-6 straight or branched chain alkyl; R 3 is C 1-6 straight or branched alkyl; R4 is a halogen atom and pharmaceutically acceptable salts thereof for use in the manufacture of a medicament for use as a 5-HT6 and / or 5-HT7 serotoninergic receptor ligand. HE