Steroidal saponins from the fruits of Solanum torvum
| Autor: | Luis B. Rojas, Laurent Pouységu, Chiaki Tanaka, Marie Aleth Lacaille-Dubois, Stéphane Quideau, Alida Pérez Colmenares, Alfredo Usubillaga, Thomas Paululat, Anne Claire Mitaine-Offer, Tomofumi Miyamoto |
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| Rok vydání: | 2013 |
| Předmět: |
Magnetic Resonance Spectroscopy
Molecular Structure Steroidal glycosides biology Stereochemistry Chemistry Plant Science General Medicine Nuclear magnetic resonance spectroscopy Saponins Horticulture Solanum biology.organism_classification Mass spectrometry Biochemistry Mass Spectrometry Steroid Saponins Fruit Botany Solanum torvum Molecular Biology Two-dimensional nuclear magnetic resonance spectroscopy Heteronuclear single quantum coherence spectroscopy |
| Zdroj: | Phytochemistry. 86:137-143 |
| ISSN: | 0031-9422 |
| Popis: | Seven steroidal glycosides have been isolated from the fruits of Solanum torvum Swartz. Their structures were established by 2D NMR spectroscopic techniques ( 1 H, 1 H-COSY, TOCSY, NOESY, HSQC, and HMBC) and mass spectrometry as (25 S )-26-(β- d -glucopyranosyloxy)-3-oxo-5α-furost-20(22)-en-6α-yl- O -β- d -xylopyranoside ( 1 ), (25 S )-26-(β- d -glucopyranosyloxy)-3-oxo-22α-methoxy-5α-furostan-6α-yl -O -β- d -xylopyranoside ( 2 ), (25 S )-26-(β- d -glucopyranosyloxy)-3β-hydroxy-22α-methoxy-5α-furostan-6α-yl- O -α- l -rhamnopyranosyl-(1 → 3)-β- d -glucopyranoside ( 3 ), (25 S )-3β-hydroxy-5α-spirostan-6α-yl- O -β- d -xylopyranoside ( 4 ), (25 S )-3-oxo-5α-spirostan-6α-yl- O -β- d -xylopyranoside ( 5 ), (25 S )-3β-hydroxy-5α-spirostan-6α-yl- O -β- d -glucopyranoside ( 6 ), (25 S )-3β,27-dihydroxy-5α-spirostan-6α-yl- O -β- d -glucopyranoside ( 7 ). |
| Databáze: | OpenAIRE |
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