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 γ-position of proline represented by the formula (I)
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,作为药物产品令人满意。本发明人发现,具有引入取代基的脯
氨酸γ位的衍
生物具有强效的
DPP-IV抑制活性,并通过提高稳定性完成了本发明。其中,所述脯
氨酸的公式(I)中的每个符号如规范中所定义。