Five new stilbene dimers from the lianas of Gnetum hainanense.
Five new stilbene dimers, gnetuhainins A-E (1-5), were isolated together with resveratrol trans-dehydrodimer (6), resveratrol, oxyresveratrol, and (-)-epsilon-viniferin from the lianas of Gnetum hainanense. Their structures and stereochemistry were determined on the basis of their chemical and spectral data. Compounds 1-5 are dimers formed by a resveratrol unit and an oxyresveratrol unit and belong to a new type of oligostilbenes polymerized from two different stilbene units.
Huang
K S
KS
Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, People's Republic of China.
Wang
Y H
YH
Li
R L
RL
Lin
M
M
D019281:Dimerization; D015394:Molecular Structure; D010944:Plants / Q000737:chemistry*; D013057:Spectrum Analysis; D013267:Stilbenes / Q000737:chemistry / Q000302:isolation & purification*
D013267:Stilbenes