Cytotoxic alkoxylated xanthones from the resin of Garcinia hanburyi.

Abstract Three new xanthones, garcinolic acid ( 1 ), 10α-ethoxy-9,10-dihydromorellic acid ( 2 ), and 10α-ethoxy-9,10-dihydrogambogenic acid ( 3 ), along with six known compounds were isolated from the resin of Garcinia hanburyi . These compounds were tested for their cytotoxicities against A549, HCT116, SK-BR-3 and HepG2, and showed high inhibitory effects on the cell lines.