Histamine H3-receptor ligands and their therapeutic application

摘要

The present patent application concerns new compounds of formula (I)
with R 1 and R 2 taken together with the nitrogen atom to which they are attached, form a saturated nitrogen-containing ring, A is a saturated C1-4 alkylene and B a C3-4 alkylene or alkenylene chain; their preparation and their use as a H3 receptor ligand for treating e.g. CNS disorders like Alzheimer's disease.