Five stilbene dimers, gnetuhainins F-J, were isolated together with gnetuli
n, rhapontigenin, isorhapontigenin and gnetol from the lianas of Gnetum hai
nanense C. Y. Cheng. Their structures and stereochemistry have been establi
shed on the basis of spectral evidence, especially 2D NMR spectroscopic tec
hniques. (C) 2000 Elsevier Science Ltd. AU rights reserved.