[Studies on xanthones from herbs of Polygala telephioides].
OBJECTIVE
To study the chemical constituents from the whole plants of Polygala telephioides.


METHODS
Compounds were isolated by repeated silica gel and Sephadex LH -20 column chromatography, and their structures were determined by spectral analysis and physicochemical properties.


RESULTS
Six xanthones were isolated from P. telephioides, and their structures were identified as 1, 3, 7-trihydroxyxanthone (1), 1, 7-dihydroxy-3-methoxyxanthone (2), 1, 3-dihydroxyxanthone (3), 1, 7-dihydroxyxanthone (4), 1-methoxy-2, 3-methylenedioxyxanthone (5) and 1, 7-dimethoxyxanthone (6).


CONCLUSIONS
All the compounds were obtained from this plant for the first time.
Chang
Hai-Tao
HT
Modern Research Center for Traditional Chinese Medicine, School of Pharmaceutical Sciences, Peking University Health Science Center, Beijing 100083, China.
Niu
Feng
F
Wen
Jing
J
Jiang
Yong
Y
Tu
Peng-Fei
PF
D010946:Plants, Medicinal / Q000737:chemistry*; D031801:Polygala / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
C511009:1-methoxy-2,3-methylenedioxyxanthone; D044004:Xanthones; C436833:gentisein