Antiviral activity is exhibited by compounds having the formula
and pharmaceutically acceptable salts thereof wherein R1 is a purine or pyrimidine base or an analog thereof and R2 and R3 are independently hydrogen, -PO3H2 or - -X7, wherein X7 is hydrogen, alkyl, substituted alkyl or aryl.
具有以下式子的化合物具有抗病毒活性
及其药学上可接受的盐类,其中 R1 是
嘌呤或
嘧啶碱或其类似物,R2 和 R3 独立地是氢、-PO3H2 或 -X7,其中 X7 是氢、烷基、取代的烷基或芳基。