| abstract |
【Task】 To find a therapeutic and / or preventive drug for diabetes etc. having excellent activity and safety. [Solution] The following general formula (I) Embedded image [A represents a cyclic group or the like, R 1 and R 2 represent an alkyl group, a hydroxymethyl group or the like, and n represents 1 or 2. Or a pharmacologically acceptable salt or ester thereof. [Selection diagram] None |