A compound of the formula (I) or a pharmaceutically acceptable salt thereof: [wherein X and Y each is independently O, etc.; R1 and R2 each is independently H or (lower)alkyl; R3 is (lower)alkenyl, etc; R4 and R5 each is independently H or (lower)alkyl; n is 0, 1, 2, 3 or 4.] Compound of formula (I) inhibit DPP-IV activity. They are therefore useful in the treatment of conditions mediated by DPP-IV, such as NIDDM.
公式(I)的化合物或其药学上可接受的盐:[其中X和Y分别独立地为O,等;R1和R2分别独立地为H或(较低)烷基;R3为(较低)烯基,等;R4和R5分别独立地为H或(较低)烷基;n为0、1、2、3或4。] 公式(I)的化合物抑制
DPP-IV活性。因此它们在治疗由
DPP-IV介导的疾病,如NID
DM方面是有用的。