| 摘要 |
The present invention provides a prophylactic or therapeutic agent for irritable bowel syndrome, which comprises a compound represented by formula (I): wherein, R1 represents an optionally substituted hydrocarbon group, etc., R2 represents a hydrogen atom or an optionally substituted hydrocarbon group, R3 represents a hydrogen atom, an optionally substituted hydrocarbon group, etc., X represents CHR4, NR4, CO, O or S (wherein, R4 represents a hydrogen atom, an optionally substituted hydrocarbon group, etc.), Y represents C, CH or N, <img id="CUSTOM-CHARACTER-00001" he="2.79mm" wi="9.48mm" file="US20090048325A1-20090219-P00001.TIF" img-content="character" img-format="tif"/> represents a single bond or double bond, ring A represents an optionally substituted 5- to 7-membered oxygen-containing heterocyclic ring, ring B represents an optionally substituted benzene ring, and m represents an integer of 1 to 4, or a salt thereof.
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