[Studies on xanthones from aerial parts of Polygala sibirica].
OBJECTIVE
To investigate the chemical constituents of the aerial parts of Polygala sibirica systematically.


METHODS
The chemical constituents were isolated by various column chromatographic methods. The structures were identified by spectral data.


RESULTS
Ten compounds were isolated and identified as 6-hydroxy-1, 2, 3, 7-tetramethoxy xanthone (1); 1, 2, 3, 6, 7-heptamethoxy xanthone (2); 1, 7-didydroxy-2, 3-methylenedioxy xanthone (3); 1, 7-dihydroxy-2, 3-dimethoxy xanthone (4); 1, 3, 7-trihydroxy-2-methoxy xanthone (5); 1, 6, 7-trihydroxy-2, 3-dimethoxy xanthone (6); alpha-spinasterol (7); alpha-spinasterolic-3-O-beta-D-glucoside (8); squalene (9) and polygital (10).


CONCLUSIONS
Compounds 1-10 were isolated from this species for the first time.
Song
Yuelin
Y
State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100191, China.
Jiang
Yong
Y
Zhou
Sixiang
S
Bi
Dan
D
Tu
Pengfei
P
D035261:Plant Components, Aerial / Q000737:chemistry; D010936:Plant Extracts / Q000737:chemistry; D031801:Polygala / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry*
D010936:Plant Extracts; D044004:Xanthones; C009689:xanthone