| abstract |
The present invention refers to chemical compounds of formula (I) as well as pharmaceutically acceptable salts, solvates and esters thereof, wherein R1 to R7 have the significance given in the description and the claims. The compounds can be used in the form of pharmaceutical preparations for the treatment or prevention of disorders of the central nervous system, damage to the central nervous system, cardiovascular disorders, gastrointestinal disorders, diabetes insipidus, type II diabetes, obesity and sleep apnoea. |