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 of Phyllanthus 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.
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Acetylation
-
Drugs, Chinese Herbal / chemistry
-
Drugs, Chinese Herbal / isolation & purification*
-
Glycosides / chemistry
-
Glycosides / isolation & purification*
-
Molecular Structure
-
Nuclear Magnetic Resonance, Biomolecular
-
Phyllanthus / chemistry*
-
Quercetin / analogs & derivatives*
-
Quercetin / chemistry
-
Quercetin / isolation & purification*
Substances
-
Drugs, Chinese Herbal
-
Glycosides
-
quercetin 3-O-alpha-L-(3,4-di-O-acetyl)rhamnopyranoside-7-O-alpha-L-rhamnopyranoside
-
quercetin 3-O-alpha-l-(2,4-di-O-acetyl)rhamnopyranoside-7-O-alpha-L-rhamnopyranoside
-
quercetin-3-O-alpha-L-rhamnopyranoside
-
Quercetin