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Three new glucosides, ziberthinosides A–C (1–3), and six known compounds, cleomiscosins A–D (4–7), sporogen AO-2 (8) and sapinofuranone A (9), were isolated from a methanol extract of  Durio zibethinus  fruit peels. Their chemical structures were elucidated by analyses of their 1 D/2D NMR and HR-ESI-MS data as well as by comparison with the literature values. The absolute configuration of sporogen AO-2 (8) was confirmed by ECD calculation. Of the isolates, compounds 8 and 9 were cytotoxic toward all MCF7, HepG2 and SK-LU-1 cell lines, with IC 50  values ranging from 10.7 to 34.9 μM. Our results contribute to better understanding of the chemical constituents of the high valued durian fruit and their pharmacological effect, such as cytotoxicity.

Secondary metabolites from the fruit peels of Durio zibethinus L. and their cytotoxic activity