| 摘要 |
Novel substituted adenosine derivatives of formula (I), or a pharmaceutically acceptable salt thereof, wherein X represents hydrogen, halogen, amino, perhalomethyl, acetamido, cyano, C1-6-alkyl, C1-6-alkoxy, C1-6-alkylthio or C1-6-alkylamino; R<1> is -NR<2>R<3>, -YR<4>, wherein Y is oxygen or sulphur; R<2> is C1-6-alkyl; R<3> is phenyl or C1-6-alkyl, which may be substituted with phenyl or phenoxy; R<4> is naphthyl; partly saturated naphthyl; C1-6-alkyl, which may be substituted with phenoxy or phenyl, which may be substituted with nitro, halogen or amino; or C3-8-cycloalkyl, which may be substituted with phenyl or phenoxy, which have been found useful for treating central nervous system ailments. |
