Disclosed is a compound which is useful as an AMPK activator. A compound represented by the formula:its pharmaceutically acceptable salt, or a solvate thereof,whereina group represented by the formula:is a group represented by the formula:R1 is each independently halogen, hydroxy, cyano, nitro, carboxy, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl or the likem is an integer of 0 to 3R2 is hydrogen, or substituted or unsubstituted alkylX is -O- andY is substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl.
