Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...
Reexamination Certificate
2005-09-01
2009-02-24
Berch, Mark L (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Having -c-, wherein x is chalcogen, bonded directly to...
C514S263210, C514S263220, C514S263350, C544S268000, C544S269000, C544S270000, C544S272000
Reexamination Certificate
active
07495002
ABSTRACT:
The present invention relates to new substituted xanthines of general formulawherein R1, R2and X are defined as in the claims, 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).
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Eckhardt Matthias
Himmelsbach Frank
Langkopf Elke
Lotz Ralf R. H.
Tadayyon Mohammad
Berch Mark L
Boehringer Ingelheim International GmbH
Devlin Mary-Ellen M.
Kershner David L.
Morris Michael P.
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