Xanthine derivatives, the preparation thereof and their use as pharmaceutical compositions
申请人:——
公开号:US20020198205A1
公开(公告)日:2002-12-26
The present invention relates to substituted xanthines of general formula
1
wherein R
1
to R
4
are defined as in claim 1, the tautomers and the stereoisomers thereof, mixtures thereof, the prodrugs and the salts thereof which have valuable pharmacological properties, particularly an inhibiting effect on the activity of the enzyme dipeptidylpeptidase-IV (DPP-IV).
本发明涉及一般式1的取代黄嘌呤,其中R1至R4如权利要求1中定义,其互变异构体和立体异构体,其混合物,其前药和其盐,具有有价值的药理特性,特别是对酶二肽基肽酶-IV(DPP-IV)活性的抑制作用。