A new xanthone C-glycoside, polygalaxanthone III (1), and a new acylated sugar, tenuifoliside E (2) were isolated from the roots of Polygala tenuifolia. Their structures were characterized as 4-C-[β-D-apiofuranosyl-(1→6)-β-D-glycopyranosyl]-1,3,6-trihydroxy-7-methoxyxanthone (1) β-D-(1-O-acetyl-3-O-feruloyl-6-O-sinapoyl)-fructofuranosyl-α-D-(2,4,6-O-triacetyl)glucopyranoside (2), respectively, on the basis of chemical and spectral evidence including two dimensional nuclear magnetic resonance (2D-NMR) studies.
phenolic glycoside, Polygala tenuifolia, Polygalaceae, polygalaxanthone III, tenuifoliside E
Publication DOI: 10.1248/cpb.42.2305Journal NLM ID: 0377775WWW link: http://ci.nii.ac.jp/naid/110003630834Publisher: Pharmaceutical Society Of Japan
Institutions: Tsumura Central Research Laboratories, Japan
Methods: 13C NMR, 1H NMR, IR, FAB-MS, TLC, acid hydrolysis, GLC, methanolysis, oxidation, acetylation analysis
Found