Fourteen new dibenzocyclooctadiene lignans, ananolignans A-N (1-14), together with five known compounds, were isolated from the seeds of Kadsura ananosma. The structures and absolute configurations of 1-14 were established using a combination of spectroscopic methods including 1D- and 2D-NMR and CD techniques. The biological activity of the isolated lignans was evaluated, and ananolignan F (6) and ananolignan L (12) showed significant neuroprotective effects in an in vitro assay.
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