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).
本发明提供了式(4)的化合物及其药学上可接受的盐和溶剂,它们可用作丙型肝炎病毒(HCV)聚合酶酶的
抑制剂,并且对于治疗HCV感染的HCV感染的哺乳动物也有用。本发明还提供了包含式(4)的化合物、其药学上可接受的盐和溶剂的药物组合物。此外,本发明还提供了中间体化合物和用于制备式(4)化合物的有用方法。