Astragalin 2';';,6';';-di-O-gallate from Loropetalum chinense

作者：Liu YZ^*; Wu YJ; Yuan K; Ji CR; Hou A; Yoshida T; Okuda T

来源：Phytochemistry, 1997, 46(2): 389-391.

DOI：10.1016/S0031-9422(97)00295-1

• Loropetalum chinense
• Hamamelidaceae
• astragalin 2'
• '
• ,6'
• '
• -di-O-gallate
• Loropetalin D
• kaempferol 3-(2'
• '
• ,6'
• '
• -digalloylglucoside)
• astragalin 2'
• '
• -O-gallate and 6'
• '
• -O-gallate
• galloylated flavonol glycosides
• hydrolysable tannins

A new galloylated flavonol glycoside, astragalin 2 ';';,6 ';';-di-O-gallate (loropetalin D), together with two related flavonol glycosides was isolated from the leaves of Loropetalum chinense. The-two related flavonol glycosides were characterized as astragalin 2 ';';-O-gallate and astragalin 6 ';';-O-gallate by chemical methods, H-1 and C-13 NMR spectral analysis. The structure of loropetalin D was established by comparison of H-1 and C-13 NMR spectral data with those of the monogallates.

• 出版日期1997-9
• 单位河南中医药大学; 郑州大学