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,其在
嘧啶环的5位存在乙基基团或异丙基基团,在
嘧啶环的6位存在取代的苯
硫基或取代的苄基。该
嘧啶核苷衍
生物及其药学上可接受的盐显示出明显更高的抗逆转录病毒活性,比传统的类似化合物具有相对较低的对宿主细胞的毒性,因此,它们可用作抗病毒剂的活性成分。