| 摘要 |
Pyrimidine 4 min -thionucleosides of the formula (I) <CHEM> where B<1> is a pyrimidine base; and either (a) R<2> is hydrogen and R<3> is hydroxy or fluoro, or (b) R<2> is hydroxy and R<3> is hydrogen, hydroxy or fluoro, or (c) R<2> is fluoro and R<3> is hydrogen or hydroxy, or (d) R<2> and R<3> together form a carbon-carbon bond; and physiologically functional derivatives thereof and processes for their production. Preferably, the base B<1> is of the formula (II) <CHEM> wherein Y is hydroxy or amino, monoalkylamino or dialkylamino; and X is halogen, alkoxy, alkyl, haloalkyl, alkenyl, haloalkenyl, alkynyl, amino, monoalkylamino, dialkylamino, cyano or nitro. The compounds are useful in the treatment of viral infections. |
