Tannins and Related Compounds. XVI. Isolation and Characterization of Six Methyl Glucoside Gallates and a Gallic Acid Glucoside Gallate from Sanguisorba officinalis L.
著者所属：Faculty of Pharmaceutical Sciences, Kyushu University Faculty of Pharmaceutical Sciences, Kyushu University Faculty of Pharmaceutical Sciences, Kyushu University
Six methyl glucoside gallates (I-VI) were isolated, together with gallic acid 3-O-β-D-(6'-O-galloyl)-glucopyranoside (VII), from the undeground part of Sanguisorba officinalis L. On the basis of chemical and spectroscopic evidence, the structures of these compounds were established to be 6-O-gallate (1), 6-O-digallate (2), 4, 6-di-O-gallate (3), 2, 3, 6-tri-O-gallate (4), 3, 4, 6-tri-O-gallate (5) and 2, 3, 4, 6-tetra-O-gallate (6) of methyl β-D-glucopyranoside.
