TYR and melanoma: The following resveratrol oligomers: ε-viniferin as a dimer; vaticanol A, vaticanol G, and α-viniferin as trimers; vaticanol B, vaticanol C and (-)-hopeaphenol as tetramers were tested towards tyrosinase from murine B16 melanoma cells and L-DOPA as the substrate and kojic acid as a control (IC50 =119.7 μM; c.