SUBSTITUTED BENZOQUINOLIZINES AS DPP-IV INHIBITORS FOR THE TREATMENT OF DIABETES.

摘要

The present invention relates to compounds of formula (I); wherein R1to R4 are as defined in the description and claims, and pharmaceuticallyacceptable salts thereof. The compounds are useful for the treatment and/orprophylaxis of diseases which are associated with DPP-IV, such as diabetes,particularly non-insulin dependent diabetes mellitus, and impaired glucosetolerance.