Eight dibenzocyclooctadiene lignans were isolated from the stems of Schisan
dra propinqua (Wall.) Hook. f. et Thoms. Their structures were elucidated a
s acetylgomisin R (1), angeloylgomisin R (2), gomisins A(3), B(4), N(5) and
O(6), 6-O-benzoylgomosin O(7) and schisantherin A(8) by spectral studies.
Among them, compound 1 was a new one, compound 2 was discovered in the genu
s Schisandra for the first time and the others were originally isolated fro
m Schisandra propinqua.