[Problem]To provide a GPR40 activating agent having, as an active ingredient, a novel compound having a GPR40 agonist action, a salt of the compound, a solvate of the salt or the compound, or the like, particularly, an insulin secretagogues and a prophylactic and/or therapeutic agent against diabetes, obesity, or the like.[Means of solving the problem]A compound of Formula (III):(where f is 0 to 2 g is 1 to 4 j is 0 to 3 k is 0 to 2 n is 0 to 2 p is 0 to 4 h is 0 to 3 q1 id 0 to 3 q2 is 0 or 1 r1 is 0 to 2 (with the proviso that q1+q2+r1 is 0 to 5) J1a is -CR11a-, N J2 is -CR12aR12b-, -CR12c- T is -CH2-, O, -S(O)i- (i is an integer of 0 to 2) or -NR7- X is O, S, or -NR7- ring A" is a benzene ring, a pyridine ring ring B is a benzene ring, a pyridine ring, a pyrimidine ring and R1 to R14 are specific groups),a salt of the compound, or a solvate of the salt or the compound.
