TYR and melanoma: Four flavonoid glycosides, namely quercetin-3-O-rhamnoside (1), kaempferol-3-O-β-d-glucopyranosyl (2), kaempferol-7-O-α-l-rhamnopyranoside (3), and kaempferol-3-O-β-d-glucopyranosyl-7-O-α-l-rhamnopyranoside (4), from Nephelium lappaceum L. seeds were evaluated for their efficacy against melanin inhibition in B16F10 melanoma cells and tyrosinase inhibition.