| 摘要 |
A muscarinic receptor antagonist of formula (I) or a pharmaceutically acceptable salt thereof, wherein Y is a direct link, -CH2-, -(CH2)2-, -CH2O- or -CH2S-; and R1 is a group of formulae (a), (b), (c) or Het where R2 and R3 are each independently H, C1-C4 alkyl, C1-C4 alkoxy, -(CH2)nOH, halo, trifluoromethyl cyano, -(CH2)nNR4R5, -CO(C1-C4 alkyl), -OCO(C1-C4 alkyl), -CH(OH)(C1-C4 alkyl), -C(OH)(C1-C4 alkyl)2, -SO2NH2, -(CH2)nCONR4R5 or -(CH2)nCOO(C1-C4 alkyl);R4 and R5 are each independently H or C1-C4 alkyl; n is 0, 1 or 2; X and X1 are each independently O or CH2; m is 1, 2 or 3; and "Het" is pyridyl, pyrazinyl or thienyl. The compounds are particularly useful in the treatment of irritable bowel syndrome.
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