Two new xanthones from Polygala crotalarioides.
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.
Hua
Yan
Y
State Key Laboratory of Phytochemistry and Plant Reeources in West China, Kunming Institute of Botany, the Chinese Academy of Sciences, Kunming 650204, Yunnan, China.
Chen
Chang-Xiang
CX
Liu
Yu-Qing
YQ
Zhou
Jun
J
D009682:Magnetic Resonance Spectroscopy; D031801:Polygala / Q000737:chemistry*; D044004:Xanthones / Q000737:chemistry / Q000302:isolation & purification*
C525294:1,6,8-trihydroxy-7-methoxy-2,3-methylenedioxyxanthone; C525295:1,6-dihydroxy-7,8-dimethoxy-2,3-methylenedioxyxanthone; D044004:Xanthones