New flavonoids and xanthone from the stem bark of Artocarpus rigidus blume and cytotoxicity

Three new flavonoids named artorigidinones A–C and a new xanthone named artorixanthone together with seven known compounds were isolated from the stem bark of Artocarpus rigidus Blume. Their structures were characterized by spectroscopic data. γ-Geranylapigenin exhibited cytotoxicity to a fibroblast-like cell line (SW1353) (IC50 < 0.32 µg/mL) stronger than a standard drug.