Structural elucidation of two new megastigmane glycosides from the leaves of Aquilaria sinensis / 中国天然药物
Chinese Journal of Natural Medicines (English Ed.)
; (6): 290-294, 2015.
Article
in En
| WPRIM
| ID: wpr-812145
Responsible library:
WPRO
ABSTRACT
The present study was designed to determine the chemical constituents and identify new components of the leaves of Aquilaria sinensis (Lour.) Gilg. The compounds were isolated and purified by repeated silica gel, Sephadex LH-20, and ODS column chromatography and their structures were elucidated by NMR and HR-ESI-MS spectrometry. Eight megastigmane glycosides and two cucurbitacins were isolated and identified as (9S) megastigma-4,7-diene-2,3,9-triol 9-O-β-D-glucopyranoside (1), (9S) megastigma-4(13),7-diene-3,6,9-triol 9-O-β-D-glucopyranoside (2), macarangloside D (3), corchoionoside C (4), staphylionoside H (5), (+) 3-oxo-α-ionol-β-D-glucopyranoside (6), (-) 3-oxo-α-ionol-β-D-glucopyranoside (7), citroside B (8), 2-O-β-D-glucopyranosyl cucurbitacin I (9), bryoamaride (10). Compounds 1 and 2 were newly identified megstigmane glucosides and reported from this genus for the first time.
Key words
Full text:
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Index:
WPRIM
Main subject:
Magnetic Resonance Spectroscopy
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Chemistry
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Chromatography, Liquid
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Plant Leaves
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Cyclohexanones
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Thymelaeaceae
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Norisoprenoids
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Cucurbitacins
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Glucosides
Language:
En
Journal:
Chinese Journal of Natural Medicines (English Ed.)
Year:
2015
Type:
Article