The present invention relates to compounds of formula (I)
wherein R
1
to R
4
are as defined in the description and claims, 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.
本发明涉及式(I)的化合物,其中R1至R4如描述和索赔中定义,并且其药学上可接受的盐。这些化合物对与
DPP-IV相关的疾病的治疗和/或预防有用,例如糖尿病,特别是非
胰岛素依赖型糖尿病和糖耐量受损。