| 摘要 |
The present application relates to compounds of the formulawhereinR<1 >is hydrogen, halogen or lower alkoxy;R<2 >is hydrogen or is -C(O)-lower alkyl or -C(O)-phenyl, wherein the phenyl ring is unsubstituted or substituted by one or two substituents selected from the group consisting of halogen, lower alkyl, lower alkoxy and trifluoromethyl, or is -C(O)-furanyl or -C(O)-thiophenyl, wherein the rings are unsubstituted or substituted by halogen;or a pharmaceutically acceptable salt thereof. The compounds are useful in the treatment of diseases associated with the adenosine A2 receptor.
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