The present invention relates to 2-amino-imidazo[4,5-d]pyridazin-4-ones and 2-amino-imidazo[4,5-c]pyridin-4-ones of general formula
wherein R
1
to R
4
and X are defined as in claims
1
to
6
, the tautomers, the enantiomers, the diastereomers, the mixtures thereof and the salts thereof, which have valuable pharmacological properties, particularly an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPP-IV).
本发明涉及通式为的
2-氨基咪唑[4,5-d]
吡啶嗪-4-酮和
2-氨基咪唑[4,5-c]
吡啶-4-酮,其中R1至R4和X如权利要求1至6所定义,其互变异构体、对映异构体、非对映异构体、混合物及其盐具有有价值的药理学特性,特别是对酶二肽基肽酶-IV(
DPP-IV)活性的抑制作用。