1. Two new acetylated flavonoid glycosides from Phyllanthus urinaria.
- Author
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Wu, Chun, Wei, Chun-Shan, Yu, Shao-Fu, Liu, Bai-Lian, Li, Yao-Lan, Ye, Wen-Cai, Tong*, Guang-Dong, and Zhou*, Guang-Xiong
- Subjects
CHROMATOGRAPHIC analysis ,FLAVONOIDS ,GLYCOSIDES ,MASS spectrometry ,MOLECULAR structure ,NUCLEAR magnetic resonance spectroscopy ,PHARMACEUTICAL chemistry ,RESEARCH funding ,PLANT extracts - Abstract
Two new acetylated flavonoid glycosides, quercetin 3-O-α-l-(2,4-di-O-acetyl) rhamnopyranoside-7-O-α-l-rhamnopyranoside (1) and quercetin 3-O-α-l-(3,4-di-O-acetyl) rhamnopyranoside-7-O-α-l-rhamnopyranoside (2), together with two known compounds, quercetin (3) and quercetin 3-O-α-l-rhamnopyranoside (4), were isolated from the ethanol extract ofPhyllanthus urinaria. The structures of the new compounds were determined on the basis of extensive spectroscopic data including IR, HR-ESI-MS, 1D NMR, and 2D NMR. [ABSTRACT FROM PUBLISHER]
- Published
- 2013
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