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效果的化合物,其作用是通过
DPP-IV的抑制作用,并且作为药物产品具有令人满意的效果。本发明人发现,在丙
氨酸的γ位上引入取代基的衍
生物具有强效的
DPP-IV抑制活性,并通过增加稳定性完成了本发明。