Pyrido [2,1-a] isoquinoline derivatives

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C546S095000, C546S094000

Reexamination Certificate

active

07122555

ABSTRACT:
The present invention provides compounds of formula (I)wherein R1, R2, R3and R4are as indicated in the description, or a pharmaceutically acceptable salt thereof. The compounds are useful for the treatment of diseases which are associated with DPP-IV, such as diabetes, particularly non-insulin dependent diabetes mellitus, and impaired glucose tolerance.

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