| abstract |
The present invention relates to a novel compound or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition for preventing or treating diseases caused by an influenza virus infection containing the same as an active ingredient. The novel compounds represented by formula (I) according to the present invention are remarkably superior in antiviral activity against influenza viruses and have little cytotoxicity to human cells and thus have little adverse effects on the human body. Therefore, The composition can be usefully used for the prevention or treatment of influenza, cold, sore throat, bronchitis, pneumonia, avian influenza, swine flu, chlorophyll and the like caused by influenza virus infection. |