Structure elucidation of two new norlignans from Anemone vitifolia Buch.-Ham. and their anti-inflammatory activity.

Two new norlignans ( 1 - 2 ), together with two known phenylpropanoids ( 3 - 4 ) were isolated from whole herb of Anemone vitifolia. All compounds were reported from this plant for the first time. The structures of these compounds were identified by comprehensive HR-ESI-MS, 1D and 2D NMR spectroscopic data analysis and comparison with literature data. Additionally, bioactivity study results showed two new compounds have potential anti-inflammatory activity. The plausible biosynthetic pathway for these compounds were also speculated in the paper.