New flavonol glycosides and new xanthone from Polygala japonica.

  title={New flavonol glycosides and new xanthone from Polygala japonica.},
  author={T J Li and W Zhang and G Yang and W-y Liu and R-H Liu and Chunlei Zhang and H Chen},
  journal={Journal of Asian natural products research},
  volume={8 5},
Three new flavonol glycosides and a new xanthone were isolated from Polygala japonica HOUTT. with eight known compounds. Their structures were identified as 1,7-dihydroxy-3,4-dimethoxy-xanthone (1), kaempferol-7,4'-dimethyl ether (2), physcion (3), guazijinxanthone (4), rhamnetin (5), polygalin A (6), 3,5,7-trihydroxy-4'-methoxy-flavone-3-O-beta-d-galactopyranoside (7), 3,5,3'-trihydoxy-7,4'-dimethoxy-flavone-3-O-beta-d-galactopyranoside (8), 3,5,3',4'-tetrahydroxy-7-methoxy-flavone-3-O-beta-d… CONTINUE READING