Filixic acid ABA exhibits inhibitory effects on neuraminidase of influenza virus H5N1 with IC50 as 29.57 ± 2.48 μM, it may have anti-influenza virus activity.
Asebotin shows anti-influenza A virus activity, it also possesses potent antiviral activity (100% inhibition at the concentration of 1 ug /mL) against highly pathogenic avian influenza strain H5N1. Asebotin can inhibit the proliferation of murine B cells.