| abstract |
This invention relates to compounds represented by the general formula [I]wherein, R represents an azido group, etc., R<1 >and R<2 >are the same or different and represent hydrogen atoms, etc., R<3 >and R<4 >are the same or different and represent hydrogen atoms, etc., X1 represents an oxygen atom, etc., X2 represents an oxygen atom, etc., Y represents an oxygen atom, etc., and Z represents a condensed aryl group, etc., or a pharmaceutically acceptable salt thereof, preparation processes thereof, and an agent for treating diabetes, a prophylactic agent for chronic complications of diabetes or a drug against obesity, containing, as an effective ingredient, the compound or the pharmaceutically acceptable salt thereof. |