A new 7',9-epoxylignan from the stems of .

Bioactivity-guided isolation of the CHCl-soluble fraction of the stems of L. (Celastraceae) was carried out to obtain a new 7',9-epoxylignan () and three 7,9':7',9-diepoxylignans (-). The absolute configuration of was elucidated based on NMR and ECD spectroscopic data interpretation.