DIPEPTIDYL PEPTIDASE-IV INHIBITING COMPOUNDS, METHODS OF PREPARING THE SAME, AND PHARMACEUTICAL COMPOSITIONS CONTAINING THE SAME AS AN ACTIVE AGENT

摘要

The present invention relates to novel compounds, having an optionally substituted lactam ring, and having the following general structure: (see above formula) The novel compounds have excellent inhibitory activity against Dipeptidyl Peptidase-IV. The invention also relates to methods of preparing the novel compounds and pharmaceutical compositions containing the novel compounds as an active ingredient.