The present invention provides compounds of formula (4), and their pharmaceutically acceptable salts and solvates, which are useful as inhibitors of the Hepatitis C virus (HCV) polymerase enzyme and are also useful for the treatment of HCV infections in HCV-infected mammals. The present invention also provides pharmaceutical compositions comprising compounds of formula (4), their pharmaceutically acceptable salts and solvates. Furthermore, the present invention provides intermediate compounds and methods useful in the preparation of compounds of formula (4).
本发明提供了公式(4)的化合物及其药学上可接受的盐和溶剂化物,这些化合物可用作丙型肝炎病毒(HCV)聚合酶酶的
抑制剂,也可用于治疗HCV感染的HCV感染哺乳动物。本发明还提供了包含公式(4)的化合物、其药学上可接受的盐和溶剂化物的制药组合物。此外,本发明还提供了中间体化合物和用于制备公式(4)的化合物的有用方法。