Patent ID: 8183285

Claim:
A method for treatment of irritable bowel syndrome, which comprises administering an effective amount of a compound represented by formula (I): wherein, R 1 represents an optionally substituted hydrocarbon group, an optionally substituted amino group or an optionally substituted heterocyclic group, R 2 represents a hydrogen atom or an optionally substituted hydrocarbon group, R 3 represents a hydrogen atom, an optionally substituted hydrocarbon group or an optionally substituted heterocyclic group, X represents CHR 4 , NR 4 , CO, O or S wherein, R 4 represents a hydrogen atom, an optionally substituted hydrocarbon group or hydroxyl group, Y represents C, CH or N, represents a single bond or double bond, ring A represents an optionally substituted 5- to 7-membered heterocyclic ring containing an oxygen atom, ring B represents an optionally substituted benzene ring, and m represents an integer of 1 to 4, or a salt thereof, wherein the compound represented by formula (I) or a salt thereof is (S)—N-[2-(1,6,7,8-tetrahydro-2H-indeno[5,4-b]furan-8-yl)ethyl]propionamide.