The present invention aims at providing compounds having therapeutic effects due to a DPP-IV inhibitory action, and satisfactory as pharmaceutical products.
The present inventors have found that derivatives having a substituent introduced into the &ggr;-position of proline represented by the formula (I)
1
wherein each symbol is as defined in the specification, have a potent DPP-IV inhibitory activity, and completed the present invention by increasing the stability.
本发明旨在提供具有治疗作用的化合物,由于
DPP-IV抑制作用而具有满意的药物产品。本发明人发现,具有引入取代基的脯
氨酸γ-位置的衍
生物,其
化学式为(I)1,其中每个符号如规范中所定义,具有强效的
DPP-IV抑制活性,并通过增加稳定性完成了本发明。