The present invention relates to compounds of formula (I) wherein R
1
to R
5
are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors.
[EN] The present invention relates to compounds of formula (I) wherein R1 to R5 are as defined in the description and claims, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors. [FR] La présente invention concerne des composés de formule (I), R1 à R5 étant tels que définis dans la description et les revendications, ainsi que des sels pharmaceutiquement acceptables de ceux-ci. Ces composés sont utiles dans le traitement et/ou la prévention de maladies associées à la modulation des récepteurs H3.