One new galloyl glycoside from fresh leaves of Psidium guajava L / 药学学报
Acta Pharmaceutica Sinica
; (12): 334-337, 2010.
Article
in English
| WPRIM (Western Pacific)
| ID: wpr-250652
Responsible library:
WPRO
ABSTRACT
To investigate the chemical constituents of Psidium Guajava L, the EtOH/H2O extract of the fresh leaves was subjected to various chromatography. Five constituents with galloyl moiety were isolated and elucidated as 1-O-(1, 2-propanediol)-6-O-galloyl-beta-D-glucopyranoside (1), gallic acid (2), ellagic acid (3), ellagic acid-4-O-beta-D-glucopyranoside (4) and quercetin-3-O-(6"-galloyl) beta-D-galactopyranoside (5) by spectroscopic methods, including 2D NMR and HR-ESI-MS spectrometry as well as by comparison with published data. Compounds 4 and 5 were obtained from P. guajava for the first time, and compound 1 is a new polyhydroxyl compound.
Full text:
Available
Database:
WPRIM (Western Pacific)
Main subject:
Plants, Medicinal
/
Quercetin
/
Drugs, Chinese Herbal
/
Magnetic Resonance Spectroscopy
/
Molecular Structure
/
Chemistry
/
Plant Leaves
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Spectrometry, Mass, Electrospray Ionization
/
Psidium
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Ellagic Acid
Language:
English
Journal:
Acta Pharmaceutica Sinica
Year:
2010
Document type:
Article