Composition for inhibiting the activity of neuraminidase and pharmaceutical composition for prevention and treatment of influenza viral diseases comprising extracts of young barley leaves

摘要

PURPOSE: A polyphenol compound and young barley leaf extract with an effect of suppressing neuraminidase is provided to release generated virus into the outside of cells and to strongly suppress neuraminidase. CONSTITUTION: A pharmaceutical composition for preventing or treating influenza virus contains young barley leaf extract as an active ingredient and suppresses neuraminidase. The pharmaceutical composition contains a compound selected from compounds of chemical formulas 1-7. The extract is prepared using alcohol of 1-4 carbon atoms. The young barley is prepared by harvesting buds 5-15 days after sprouting and freeze-drying. A pharmaceutical composition for preventing or treating influenza virus contains the compound.