Liang-Liang An

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Phytochemical investigation of the n-BuOH fraction of the 70% EtOH extract of Juglans sigillata green husks afforded a new isoflavone triglycoside, named 3′-methoxy-5′-hydroxy-isoflavone-7-O-(2″,6″-di-O-α-L-rhamnopyranosyl)-β-D-glucopyranoside (1), along with two known epimeric ellagitannins, pedunculagin (2) and(More)
A new flavonol glycoside, quercetin-3-O-(4″-galloyl)-α-L-rhamnopyranoside (1), along with two known ones, kaempferol-3-O-β-D-glucopyranoside (2) and quercetin-3-O-rutinoside (3), were isolated from the root barks of Sophora japonica. The chemical structures of the isolated compounds were elucidated by spectroscopic analysis, including extensive 1D and 2D(More)
The root barks of Sophora japonica L., a plant widely used in traditional Chinese medicine, were extracted with 70 % Me2CO. The antibacterial activity of the crude extracts and fractions from the subsequent purification was evaluated against two Gram-positive bacteria (Bacillus subtilis and Staphylococcus aureus) and two Gram-negative bacteria (Klebsiella(More)
A new caffeoylated galloyl glucoside, 1,3-di-O-galloyl-6-O-trans-caffeoyl-β-D-glucoside (1), was isolated and purified, together with three known galloyl glucosides, 1,2,4,6-tetra-O-galloyl-β-D-glucoside (2), 1,2,6-tri-O-galloyl-β-D-glucoside (3), and 1,2,3,4,6-penta-O-galloyl-β-D-glucoside (4), from the leaves of Juglans sigillata. Chemical structures of(More)
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