A pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof specified by the presence of ethyl group or isopropyl group at 5-position of the pyrimidine ring and the presence of a (substituted) phenylthio or a (substituted) benzyl group at 6-position of the pyrimidine ring is provided. The pyrimidine nucleoside derivative and pharmaceutically acceptable salt thereof show a markedly higher anti-retroviral activity than conventional analogous compounds and have a relatively low toxicity against the host cells, and therefore, are useful as an active ingredient of antiviral agent.
本发明提供了一种
嘧啶核苷衍
生物及其药学上可接受的盐,其特征在于
嘧啶环的 5 位存在乙基或
异丙基,
嘧啶环的 6 位存在(取代的)
苯硫基或(取代的)
苄基。这种
嘧啶核苷衍
生物及其药学上可接受的盐的抗逆转录病毒活性明显高于传统的类似化合物,而且对宿主细胞的毒性相对较低,因此可用作抗病毒剂的活性成分。