Antiviral activity is exhibited by compounds having the formula
and pharmaceutically acceptable salts thereof wherein R2 and R3 are independently hydrogen, -P03H2 or
and R1 is either a purine, pyrimidine or an analog thereof.
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 R2 和 R3 独立地是氢、-P03H2 或
而 R1 是
嘌呤、
嘧啶或其类似物。