| abstract |
Disclosed is a compound represented by the formula (1) below or a pharmaceutically acceptable salt thereof, which is useful as an agent for prevention and/or treatment of diabetes and the like.n n(In the formula, R A and R B independently represent an optionally substituted alkyl group or the like; R C represents an optionally substituted alkyl group or the like; R D represents a hydrogen atom or the like; R E represents a hydrogen atom or the like; and R F represents a group selected from those represented by the formulae (G1) below:n nwherein one hydrogen atom serves as a bonding hand, or the like.) |