The present application relates to positive allosteric modulators of the muscarinic M2 receptor in particular novel 7 substituted 1 aryl naphthyridin 3 carboxylic acid amides to processes for the preparation thereof to the use thereof alone or in combinations for the treatment and/or prevention of diseases and to the use thereof for the production of medicaments for the treatment and/or prevention of diseases particular for the treatment and/or prevention of cardiovascular disorders and/or renal diseases.