| abstract |
The present invention describes an agent for preventing / treating irritable bowel syndrome, which comprises a compound representing by the formula (I) below or its salt (see formula) where, R1 represents an optionally substituted hydrocarbonate group, or the like, R2 represents a hydrogen atom or an optionally substituted hydrocarbonate group; R3 represents a hydrogen atom, an optionally substituted hydrocarbon group, or the like; X represents CHR4, NR4, CO, O or S (where, R4 represents a hydrogen atom, an optionally substituted hydrocarbonate type, or the like); 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 from 1 to 4. |