| 摘要 |
The present invention relates compounds of the formula (I): wherein R1 and R2 each independently represents a phenyl group optionally substituted by a variety of substituents; R3 represents a variety of substituents; R4, R5, R6, and R7 each independently represents hydrogen or C1-6alkyl; A represents -O- or -S-; B represents -O-, -S-, -NRa- or -CHRa-; and n is zero, 1, 2, 3, 4 or 5; or a pharmaceutically acceptable salt or a prodrug thereof. The compounds are of particular use in the treatment or prevention of depression, anxiety, pain, inflammation, migaine, emesis or postherpetic neuralgia.
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