[A new xanthone from Polygala aureocauda Dunn].
OBJECTIVE
To study the chemical constituents of Polygala aureocauda Dunn..


METHODS
Chemical compounds were isolated by column chromatography and their structures were determined mainly by spectroscopic means (UV, IR, MS, 1HNMR, 13CNMR, HMQC, HMBC).


RESULTS
Three compounds were isolated and identified as 3-hydroxy-1,4-dimethoxyxanthone (I), 1, 7-dihydroxy-2, 3-methylendioxyxanthone (II), 7-hydroxy-1-methoxy-2, 3-methylendioxyxanthone (III).


CONCLUSIONS
Compounds I-III were isolated from Polygala aureocauda Dunn. for the first time, whereas compound I is a new xanthone.
Huang
Zhao-hui
ZH
Department of Medicinal Chemistry, School of Pharmaceutical Sciences, Central South University, Changsha 410013, China.
Xu
Kang-ping
KP
Zhou
Ying-jun
YJ
Hu
Gao-yun
GY
Tan
Gui-shan
GS
D008968:Molecular Conformation; D015394:Molecular Structure; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D031801:Polygala / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
C498703:3-hydroxy-1,4-dimethoxyxanthone; D044004:Xanthones