Four New Dibenzocyclooctadiene Lignans from Schisandra rubriflora

This is the authors' abstract. We don't add key points for this paper.

From the aerial parts of Schisandra rubriflora (Franch) Rehd. et Wils., four new dibenzocyclooctadiene lignans, methylgomisin R (1), (+)‐14‐tigloylgomisin K3 (2), 12‐demethylwuweilignan I (3), schisandrene A (4), together with 13 known lignans, were isolated. The structures of four new compounds were elucidated by spectroscopic methods including extensive 1D‐ and 2D‐NMR techniques.