| abstract |
Disclosed are a GPR40 activator having as an active ingredient a compound with a novel GPR40 agonist effect, a salt thereof, or a solvate of either; disclosed in particular are an insulin secretagogue, and a prophylactic and/or therapeutic agent for diabetes and obesity, etc., wherein said compound is represented by formula (I) (wherein n is 0-2, p is 0-4, j is 0-3, k is 0-2; ring A is an aryl group or a heterocyclic group optionally substituted by L; ring B is a benzene ring, a pyridine ring, or a pyrimidine ring; X is O, S, or -NR7-; R1 to R7 and L represent a specific group). |