Preparation on oligostilbenes of isorhapontigenin by oxidative coupling reaction.
Four new compounds 1-4 were obtained from an oxidative coupling reaction of (E)-isorhapontigenin using FeCl(3) as oxidant. Their structures and stereochemistry were determined on the basis of spectroscopic evidence [UV, IR, MS, (1)H-, (13)C-NMR, NOE and 2D NMR], and their possible formation mechanisms were also discussed, respectively.
Yao
Chun-Suo
CS
Institute of Material Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, Japan.
Zhou
Li-Xin
LX
Lin
Mao
M
D002712:Chlorides; D005290:Ferric Compounds / Q000737:chemistry; D035684:Gnetum / Q000737:chemistry; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010084:Oxidation-Reduction; D013267:Stilbenes / Q000737:chemistry* / Q000302:isolation & purification
D002712:Chlorides; D005290:Ferric Compounds; D013267:Stilbenes; C432307:isorhapontigenin; C024555:ferric chloride