NOVEL PYRIDIN- AND PYRIMIDIN-DERIVATIVES

摘要

The present invention relates to compounds of formula (I) (see formula I) wherein R1, R2, R3, R4 and X are as defined in the description, and pharmaceutically acceptable salts thereof. The compounds are useful for the treatment and/or prophylaxis of diseases which are associated with DPP IV, such as diabetes, particularly non-insulin dependent diabetes mellitus, and impaired glucose tolerance.