Abstract Isopongaglabol and 6-methoxyisopongaglabol, two new hydroxyfuranoflavones, together with two furanoflavones 5-methoxyfurano (8, 7-4 ″, 5 ″) flavone and 5-methoxy- 3′, 4′-methylenedioxyfurano (8, 7-4 ″, 5 ″) flavone, two simple flavones, desmethoxykanugin and fisetin tetramethyl ether, a chromenoflavanone, ovalichromene B, two triterpenes, cycloart-23-ene-3β, 25-diol and friedelin, and β-sitosterol-β-d-glucoside ...