The invention relates to substituted imidazopyridazinediones of general formula
wherein R
1
to R
4
are defined as in claim
1
, 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).
本发明涉及一种通式为R1至R4如权利要求1所定义的取代
咪唑吡啶二酮,其互变异构体、对映异构体、顺反异构体、混合物及其盐具有有价值的药理学性质,尤其是对
二肽基肽酶IV(
DPP-IV)酶活性具有抑制作用。