The invention concerns novel substituted tricyclic pyrazolo pyrimidine compounds of formula (I-a) or (I-b) having antiviral activity, in particular, having an inhibitory activity on the replication of the respiratory syncytial virus (RSV). The invention further concerns the preparation of such novel compounds, compositions comprising these compounds, and the compounds for use in the treatment of respiratory syncytial virus infection.
该发明涉及具有抗病毒活性的新型取代
三环吡唑吡嘧啶化合物,特别是对呼吸道合胞病毒(RSV)复制具有抑制活性的化合物,其
化学式为(I-a)或(I-b)。该发明还涉及制备这种新型化合物、含有这些化合物的组合物以及用于治疗呼吸道合胞病毒感染的化合物。