3-ЗАМЕЩЕННЫЕ ПРОИЗВОДНЫЕ ПИРИДИНА В КАЧЕСТВЕ АНТАГОНИСТОВ ГИСТАМИНОВЫХ H3 РЕЦЕПТОРОВ

摘要

The present invention relates to compounds of formula I wherein R1, R2 and A are as defined in the description and claims, and pharmaceutically acceptable salts thereof as well as to pharmaceutical composition comprising these compounds and to methods for their preparation. The compounds are useful for the treatment and/or prevention of diseases which are associated with the modulation of H3 receptors.