Synthesis and Antiviral Activity of New Derivatives of Rupestonic Acid

A series of 20 new derivatives of rupestonic acid were synthesized via Davis oxidation. Their antiviral activity against influenza A virus (H3N2) was established. Several of the synthesized compounds were shown to exhibit antiviral activity against influenza A virus. Compound 4d was shown to have the highest potential activity (R = α-methylcinnamyl acyl with IC50 14.37 μg/mL and TC50 80.13 μg/mL) against influenza A virus.