Search results for "Steroid Saponins"

showing 3 items of 3 documents

Cytotoxic Spirostane-Type Saponins from the Roots of Chlorophytum borivilianum

2009

Four new spirostane-type saponins named borivilianosides E-H (1-4) were isolated from an ethanol extract of the roots of Chlorophytum borivilianum together with two known steroid saponins (5 and 6). The structures of 1-4 were elucidated using mainly 2D NMR spectroscopic techniques and mass spectrometry. The cytotoxicity of borivilianosides F (2), G (3), and H (4) and three known compounds was evaluated using two human colon cancer cell lines (HT-29 and HCT 116).

Chemical structureIndiaPharmaceutical SciencePharmacologyPlant RootsAnalytical ChemistrySteroid SaponinsDrug DiscoverySpirostansHumansCytotoxic T cellMedicinal plantsCytotoxicityNuclear Magnetic Resonance BiomolecularAsparagaceaePharmacologyPlants MedicinalMolecular StructurebiologyTraditional medicineChemistryOrganic ChemistrySaponinsbiology.organism_classificationAntineoplastic Agents PhytogenicHuman colon cancerComplementary and alternative medicineChlorophytum borivilianumMolecular MedicineDrug Screening Assays AntitumorTwo-dimensional nuclear magnetic resonance spectroscopyJournal of Natural Products
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Steroidal saponins from the fruits of Solanum torvum

2013

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 -x…

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 spectroscopyPhytochemistry
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Furostane-Type Steroidal Saponins from the Roots ofChlorophytum borivilianum

2008

Four new furostanol steroid saponins, borivilianosides A–D (1–4, resp.), corresponding to (3β,5α,22R,25R)-26-(β-D-glucopyranosyloxy)-22-hydroxyfurostan-3-yl O-β-D-xylopyranosyl-(13)-O-β-D-glucopyranosyl-(14)-O-[α-L-rhamnopyranosyl-(12)]-β-D-galactopyranoside (1), (3β,5α,22R,25R)- 26-(β-D-glucopyranosyloxy)-22-methoxyfurostan-3-yl O-β-D-xylopyranosyl-(13)-O-β-D-glucopyranosyl-(14)-O-[α-L-rhamnopyranosyl-(12)]-β-D-galactopyranoside (2), (3β,5α,22R,25R)-26-(β-D-glucopyranosyloxy)-22-methoxyfurostan-3-yl O-β-D-xylopyranosyl-(13)-O-[β-D-glucopyranosyl-(12)]-O-β-D-glucopyranosyl-(14)-β-D-galactopyranoside (3), and (3β,5α,25R)-26-(β-D-glucopyranosyloxy)furost-20(22)-en-3-yl O-β-D-xylopyranosyl-(13…

biologyChemistryStereochemistryOrganic Chemistrybiology.organism_classificationBiochemistryCatalysisInorganic ChemistrySteroid SaponinsChlorophytum borivilianumDrug DiscoveryFernPhysical and Theoretical ChemistryChlorophytumHelvetica Chimica Acta
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