A new lignan from Laggera crispata (Vahl) Hepper & J. R. I. Wood

A new lignan, 9′-O-angelyllariciresinol (1), and 20 known compounds (2–21) were isolated from the petroleum ether fraction of Laggera crispata (Vahl) Hepper & J. R. I. Wood. Their structures were identified by spectral analysis (NMR, IR, UV, and MS). Activity screening showed that compound 5 exhibited significant inhibitory effect on Staphylococcus aureus, while compound 2 exhibited significant inhibitory effect against liver cancer cell line HepG2.