Two new dihydrobenzofuran lignanamides and three known dihydrobenzofur
an lignans have been isolated from fruits of Boreava orientalis. The s
tructures of the two new compounds were established as cis- and trans-
(<2(R)under bar>,<3(S)under -hydroxymethyl-7-methoxybenzofuran-5-prop
en-1-ic(1 ,5-dimethyl)glutamate amide on the bases of chemical and spe
ctral evidence, including NOE, 2D shift-correlation and HMBC NMR exper
iments. Copyright (C) 1996 Elsevier Science Ltd