[Studies on flavonoids from herb of Artemisia ordosica].
OBJECTIVE
To study the chemical constituents of Artemisia ordosica.


METHODS
The chemical constituents were isolated and repeatedly purified on silica gel column and the structures were elucidated by the NMR spectra and physico-chemical properties.


RESULTS
Eight flavonoids were obtained and identified as 5-hydroxy-7, 4'-dimethoxyflavanone, 5-hydroxy-7, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavone, 5, 7-dihydroxy-6, 4'-dimethoxyflavone, 5, 4'-dihydroxy-7-methoxyflavanone, 5, 3', 4'-trihydroxy-7-methoxyflavanone, 5, 7-dihydroxy-3', 4'-dimethoxyflavone and 5, 3', 4'-trihydroxy-7-methoxyflavone.


CONCLUSIONS
All the compounds were obtained from A. ordosica for the first time.
Zhao
Dong-Bao
DB
State Key Laboratory of OSSO, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China. dongbaozhao@hotmail.com
Yang
Yu-Xia
YX
Zhang
Wei
W
Liu
Xiu-Hua
XH
Wang
Han-Qing
HQ
D047310:Apigenin / Q000737:chemistry / Q000302:isolation & purification*; D019306:Artemisia / Q000737:chemistry*; D047309:Flavones / Q000737:chemistry / Q000302:isolation & purification*; D005419:Flavonoids / Q000737:chemistry / Q000302:isolation & purification*; D010946:Plants, Medicinal / Q000737:chemistry*
D047309:Flavones; D005419:Flavonoids; C044998:apigenin dimethylether; C014568:genkwanin; D047310:Apigenin