6533b7d6fe1ef96bd126669f

RESEARCH PRODUCT

Steroidal saponins from the fruits of Solanum torvum

Luis B. RojasLaurent PouységuChiaki TanakaMarie Aleth Lacaille-duboisStéphane QuideauAlida Pérez ColmenaresAlida Pérez ColmenaresAlfredo UsubillagaThomas PaululatAnne Claire Mitaine-offerTomofumi Miyamoto

subject

Magnetic Resonance SpectroscopyMolecular StructureSteroidal glycosidesbiologyStereochemistryChemistryPlant ScienceGeneral MedicineNuclear magnetic resonance spectroscopySaponinsHorticultureSolanumbiology.organism_classificationMass spectrometryBiochemistryMass SpectrometrySteroid SaponinsFruitBotanySolanum torvumMolecular BiologyTwo-dimensional nuclear magnetic resonance spectroscopyHeteronuclear single quantum coherence spectroscopy

description

Abstract 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 ).

yearjournalcountryeditionlanguage
2013-02-01Phytochemistry
https://doi.org/10.1016/j.phytochem.2012.10.010