abstract |
The present invention relates to compounds of formula (I) and pharmaceutically acceptable salts thereof:n n n Formula In n n n n n n n Wheren n n R 1 , R 2 and X are as defined in the specification and claims.n n n This compound is useful for treating and / or preventing diseases associated with DPP-IV, such as diabetes, in particular non-insulin dependent diabetes mellitus and impaired glucose tolerance. |