Dibenzocyclooctane lignans from the stems of Schisandra wilsoniana.

Five new dibenzocyclooctane lignans, schisanwilsonins K-O, together with eighteen known lignans were isolated from the stems of Schisandra wilsoniana. The structures of these new compounds were elucidated by spectroscopic methods, including 2D-NMR techniques. Several compounds were found to show anti-HIV and anti-HBV activity. Georg Thieme Verlag KG Stuttgart · New York.