XANTHONE C-GLYCOSIDE AND ACYLATED SUGAR FROM POLYGALA-TENUIFOLIA

A new xanthone C-glycoside, polygalaxanthone III (1), and a new acylat ed sugar, tenuifoliside E (2) were isolated from the roots of Polygala tenuifolia. Their structures were characterized as glucopyranosyl]-1, 3,6-trihydroxy-7-methoxyxanthone (1) and apoyl)-fructofuranosyl-alpha- D-(2,4,6-O-triacetyl) (1), respectively, on the basis of chemical and spectral evidence including two dimensional nuclear magnetic resonance (2D-NMR) studies.