NOVEL SUBSTANCE HAVING .ALPHA.-GLUCOSIDASE INHIBITING ACTIVITY AND FOOD CONTAINING THE SAME

摘要

[PROBLEMS] To provide a novel substance having .alpha.-glucosidase inhibitin g activity, derived from natural products and being safe, which substance has not only a blood sugar ameliorating activity being effective in the preventi on or treatment of diabetes or obesity but also an activity of reducing postprandial hyper-blood sugar, etc. and to provide food containing the same . [MEANS FOR SOLVING PROBLEMS] A substance having .alpha.-glucosidase inhibiti ng activity, represented by the formula: