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Three new steroidal saponins from the rhizome ofParis polyphylla
- Source :
- Magnetic Resonance in Chemistry. 45:739-744
- Publication Year :
- 2007
- Publisher :
- Wiley, 2007.
-
Abstract
- A mixture of a pair of stereoisomeric new spirostanol saponins (1a and 1b) and a new cholestane saponin (2) were isolated from the rhizome of Paris pollyphylla Smith var. yunnanensis. Their structures were elucidated as (25R)-spirost-5-en-3beta, 7beta-diol-3-O-alpha-L-arabinofuranosyl-(1 --> 4)-[alpha-L-rhamnopyranosyl-(1 --> 2)]-beta-D-glucopyranoside (1a), (25R)-spirost-5-en-3beta, 7alpha-diol-3-O-alpha-L-arabinofuranosyl-(1 --> 4)-[alpha-L-rhamnopyranosyl-(1 --> 2)]-beta-D-glucopyranoside (1b) and 26-O-beta-D-glucopyranosyl-(25R)-Delta(5(6), 17(20))-dien-16, 22-dione-cholestan-3beta, 26-diol-3-O-alpha-L-arabinofuranosyl-(1 --> 4)-[alpha-L-rhamnopyranosyl-(1 --> 2)]-beta-D-glucopyranoside (2) by a combination of HR-ESI-MS, FAB-MS, 1D and 2D NMR techniques (including (1)H-NMR, (13)C-NMR, (1)H--(1)H COSY, HSQC, HMBC and NOESY).
- Subjects :
- chemistry.chemical_classification
Spectrometry, Mass, Electrospray Ionization
Magnetic Resonance Spectroscopy
biology
Chemistry
Stereochemistry
Saponin
Paris polyphylla
General Chemistry
Nuclear magnetic resonance spectroscopy
Saponins
biology.organism_classification
Plant Roots
Rhizome
chemistry.chemical_compound
Liliaceae
Indicators and Reagents
Steroids
General Materials Science
Cholestane
Two-dimensional nuclear magnetic resonance spectroscopy
Chromatography, High Pressure Liquid
Subjects
Details
- ISSN :
- 1097458X and 07491581
- Volume :
- 45
- Database :
- OpenAIRE
- Journal :
- Magnetic Resonance in Chemistry
- Accession number :
- edsair.doi.dedup.....c65393ca9b79e10fd9adf023fe80f692