8-(3-AMINO-PIPERIDIN-1-YL)-XANTHINES, THE PRODUCTION THEREOF AND THE USE OF THE SAME AS MEDICAMENTS

摘要

The invention relates to substituted xanthines of general formula (I) wherein R1 to R3 have the designations cited in patent claims 1 to 16, and to the tautomers, stereoisomers, mixtures, prodrugs and salts thereof, which have precious pharmacological properties, especially an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPP-IV).