[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): R represents a C 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 R represents a C aryl group which may independently have one to five substituents selected from substituent group (A) or the like R 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.
