Abstract
Two new xanthones, 1,6,8-trihydroxy-7-methoxy-2,3-methylenedioxyxanthone (1) and 1,6-dihydroxy-7,8-dimethoxy-2,3-methylenedioxyxanthone (2), have been isolated from the roots of Polygala crotalarioides. Their structures were elucidated by spectral and chemical methods.
Acknowledgements
The authors are grateful to the Analytical Group of the Laboratory of Phytochemistry, Kunming Institute of Botany, Chinese Acacemy of Sciences, for the spectral measurements.