[Problem] To provide a compound having an excellent glucokinase-activating effect or a pharmacologically acceptable salt thereof. [Solution] A compound represented by general formula (I) or a pharmacologically acceptable salt thereof. In general formula (I): R1 represents a C6-10 aryl group, which may independently have one to five substituents selected from substituent group (A) or the like； X represents a single bond or the like； R2 represents a C6-10 aryl group, which may independently have one to five substituents selected from substituent group (A) or the like； R3 represents a 1H-tetrazol-5-yl group or a 5-oxo-4,5-dihydro-[1,2,4]oxadiazol-3-yl group； substituent group (A) is a group consisting of halogen atoms or the like； and substituent group (B) is a group consisting of halogen atoms or the like.
