2,6-Bis-arylmethyloxy-5-hydroxychromones with antiviral activity against both hepatitis C virus (HCV) and SARS-associated coronavirus (SCV)

► Investigation of bioisosteric alternative scaffold of antiviral arylmethyloxy-ADKs. ► 2,6-Bis-arylmethyloxy-5-hydroxychromones active against both HCV and SCV. ► Antiviral activity against HCV (EC50 = 4 μM). ► Inhibition of SCV NTPase (IC50 = 4 μM) as well as ATPase activity (IC50 = 11 μM). ► Potential platform structure for multi-target or broad-spectrum antivirals.