[Chemical constituents of flowers from Polygonum orientale].
OBJECTIVE
To study the chemical constituents in the active portion from the flowers of Polygonum oriental.


METHODS
Chromatographic techniques were employed for isolation and purification of the constituents and their structures were determined by spectral analysis and chemical evidence.


RESULTS
Nine compounds were obtained and identified as alphitonin (1), methyl 3, 4-dihydroxybenzoate (2), apocynin (3), kaempferol-3-O-beta-D-glucoside (4), 1,3,5-trihydroxybenzene (5), 3,3'-dimethoxyellagic-acid-4-O-beta-D-glucoside (6), kaempferol-3-O-alpha-L-rhamnoside (7), quercetin-3-O-alpha-L-rhamnoside (8), kaempferol (9).


CONCLUSIONS
Compounds 2, 4, 5 were isolated from P. oriental for the first time and compounds 1, 3 were firstly obtained from the genus Polygonum.
Li
Yongjun
Y
School of Pharmacy, Guiyang Medical College, Guiyang, China. liyongjun026@126.com
He
Xun
X
Liu
Zhibao
Z
Huang
Yong
Y
Lan
Yanyu
Y
Wang
Aimin
A
Wang
Yonglin
Y
D004365:Drugs, Chinese Herbal / Q000032:analysis*; D035264:Flowers / Q000737:chemistry; D028502:Polygonum / Q000737:chemistry*
D004365:Drugs, Chinese Herbal