Development of a high-performance liquid chromatography procedure to identify known and detect novel C-13 oligosaccharide moieties in diterpene glycosides from Stevia rebaudiana (Bertoni) Bertoni (Asteraceae): Structure elucidation of rebaudiosides V and W.
Sign Up to like & getrecommendations! Published in 2017 at "Journal of separation science"
DOI: 10.1002/jssc.201700435
Abstract: As an aid for structure elucidation of new steviol glycosides, reversed-phase C18 high-performance liquid chromatography method was developed with several previously characterized diterpene glycosides, to identify known and detect novel aglycone-C13 oligosaccharide moieties and indirectly… read more here.
Keywords: glucopyranosyl; diterpene glycosides; bertoni; liquid chromatography ... See more keywords
Sesquiterpene Glycosides from Flowers of Yucca gloriosa
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DOI: 10.1007/s10600-018-2262-x
Abstract: Three sesquiterpene glycosides were isolated from the MeOH (70%) extract of flowers of Yucca gloriosa L. Their chemical structures were established using spectral analyses, i.e., 1D and 2D NMR (1H, 13C, HSQC, HMBC, COSY) and… read more here.
Keywords: sesquiterpene glycosides; flowers yucca; trimethyldodeca triene; glucopyranosyl ... See more keywords
Steroidal Glycoside from Allium porrum
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DOI: 10.1007/s10600-018-2385-0
Abstract: New steroidal glycoside 1 was isolated by fractionating total extracted substances from Allium porrum. Its structure was determined as (25R)-5_-spirostane-3β,6β-diol-2,12-dione 3-O-{β-D-glucopyranosyl-(1→3)-β-D-glucopyranosyl-(1→2)-[β-D-xylopyranosyl-(1→3)]-β-D-glucopyranosyl-(1→4)-β-Dgalactopyranoside} using chemical transformations, physical constants, and spectral data. read more here.
Keywords: glucopyranosyl; steroidal glycoside; allium porrum; glycoside allium ... See more keywords
Structural characterization of a complex triterpenoid saponin from Albizia lebbeck and investigation of its permeability property and supramolecular interactions with membrane constituents.
Sign Up to like & getrecommendations! Published in 2019 at "Carbohydrate research"
DOI: 10.1016/j.carres.2018.11.015
Abstract: As part of the ongoing efforts in discovering potentially bioactive natural products from medicinal plants, the present study was conducted to isolate a new complex triterpenoid saponin from the barks of Albizia lebbeck. It was… read more here.
Keywords: glucopyranosyl; supramolecular interactions; albizia lebbeck; permeability property ... See more keywords
Triterpenoid saponins and others glycosides from the stem barks of Pancovia turbinata Radlk.
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DOI: 10.1016/j.carres.2021.108393
Abstract: In our continuing search of saponins from the plant of Sapindaceae family, phytochemical investigation of the stem barks of Pancovia turbinata Radlk., led to the isolation and structural characterization of two new triterpenoid saponins, named… read more here.
Keywords: barks pancovia; stem barks; triterpenoid saponins; turbinata radlk ... See more keywords
Flavonol triglycosides from Ornithopus compressus L. (Fabaceae)
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DOI: 10.1016/j.indcrop.2019.05.048
Abstract: Abstract Five flavonoid glycosides were isolated from the aerial parts of Ornithopus compressus L., yellow serradella (Fabaceae). The structures of the isolated natural products were determined as kaempferol 3-O-(2,6-di-O-β-D-glucopyranosyl)-β-D-galactopyranoside (1), kaempferol 3-O-β-D-glucopyranosyl-(1→6)-[2-O-(2E)-feruloyl-β-glucopyranosyl]-(1→2)-β-D-galactopyranoside (2), quercetin 3-O-(2,6-di-O-β-D-glucopyranosyl)-β-D-galactopyranoside… read more here.
Keywords: fabaceae; ornithopus compressus; glucopyranosyl galactopyranoside; glucopyranosyl ... See more keywords
Oleanane-type glycosides from Pittosporum tenuifolium "variegatum" and P. tenuifolium "gold star".
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DOI: 10.1016/j.phytochem.2017.04.013
Abstract: The phytochemical study of two cultivars of Pittosporum tenuifolium Banks & Sol. ex Gaertn, "variegatum" and "gold star", led to the isolation of eight oleanane-type glycosides: seven previously undescribed and a known one. Their aglycons… read more here.
Keywords: pittosporum tenuifolium; glucopyranosyl; gold star; galactopyranosyl ... See more keywords
Reinvestigation of Herniaria glabra L. saponins and their biological activity.
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DOI: 10.1016/j.phytochem.2019.112162
Abstract: Twelve undescribed triterpenoid pentacyclic glycosides, medicagenic acid (3-O-β-D-glucuronopyranosyl-28-O-{[β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)]-[α-L-rhamnopyranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 3-O-β-D-glucuronopyranosyl-28-O-{[α-L-rhamnopyranosyl-(1 → 2)]-[β-D-apiofuranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 3-O-β-D-glucuronopyranosyl-28-O-{[α-L-rhamnopyranosyl-(1 → 2)]-3,4-O-diacetyl-β-D-fucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 28-O-{[6-O-acetyl-β-D-glucopyranosyl-(1 → 2)]-[2-O-acetyl-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 28-O-{[6-O-acetyl-β-D-glucopyranosyl-(1 → 2)]-[3-O-acetyl-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 28-O-{[6-O-acetyl-β-D-glucopyranosyl-(1 → 2)]-[4-O-acetyl-α-L-rhamnopyranosyl-(1 → 4)-β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 28-O-{[6-O-acetyl-β-D-glucopyranosyl-(1 → 2)]-[β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid, 28-O-{[β-D-glucopyranosyl-(1 → 2)]-[β-D-glucopyranosyl-(1 → 6)]-β-D-glucopyranosyl-(1→)}-2β,3β-dihydroxyolean-12-ene-23,28-dioic acid), zanhic acid (3-O-β-D-glucuronopyranosyl-28-O-{[β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)]-[α-L-rhamnopyranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}2β,3β,16α-trihydroxyolean-12-ene-23,28-dioic acid, 3-O-β-D-glucuronopyranosyl-28-O-{[β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)]-β-D-fucopyranosyl-(1→)}-2β,3β,16α-trihydroxyolean-12-ene-23,28-dioic acid), 29-hydroxy-medicagenic acid (3-O-β-D-glucuronopyranosyl-28-O-{[β-D-glucopyranosyl-(1 → 3)-α-L-rhamnopyranosyl-(1 → 2)]-[α-L-rhamnopyranosyl-(1 → 3)]-4-O-acetyl-β-D-fucopyranosyl-(1→)}-2β,3β,29β-trihydroxyolean-12-ene-23,28-dioic acid) and herniaric… read more here.
Keywords: acetyl; acid; glucopyranosyl; rhamnopyranosyl ... See more keywords
New cytotoxic steroidal saponins from Cestrum parqui
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DOI: 10.1016/j.phytol.2017.09.022
Abstract: Abstract Two new steroidal saponins, 25(R)-3β [( O -β- d -glucopyranosyl-(1 → 3)-β- d -glucopyranosyl-(1 → 2)- O -[β- d -xylopyranosyl-(1 → 3)- O -β- d -glucopyranosyl-(1 → 4)-β- d -galactopyranosyl)oxy]-5α, 15β, 22 R , 25 R -spirostan-3,15-diol ( 1, named parquispiroside )… read more here.
Keywords: steroidal saponins; new cytotoxic; cestrum parqui; cytotoxic steroidal ... See more keywords
C-Glycosyl 1,2,4-triazoles: Synthesis of the 3-β-d-glucopyranosyl-1,5-disubstituted and 5-β-d-glucopyranosyl-1,3-disubstituted variants
Sign Up to like & getrecommendations! Published in 2017 at "Tetrahedron"
DOI: 10.1016/j.tet.2017.05.014
Abstract: Highly variable synthetic routes were elaborated toward trisubstituted C-glycopyranosyl 1,2,4-triazoles. N-Acyl-thioamide derivatives were obtained by acylation of O-perbenzoylated 2,6-anhydro-d-glycero-d-gulo-heptonothioamide by acid chlorides and of thioamides by O-perbenzoylated 2,6-anhydro-d-glycero-d-gulo-heptonoyl chloride. These precursors reacted with substituted hydrazines… read more here.
Keywords: synthesis glucopyranosyl; triazoles synthesis; glycosyl triazoles; glucopyranosyl ... See more keywords
Triterpenoid saponins from the buds of Lonicera similis
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DOI: 10.1080/14786419.2017.1408092
Abstract: Abstract Four new lupane triterpenoid saponins, along with one known lupane and eight hederagenin saponins, were isolated from the EtOH extract of the buds of Lonicera similis Hemsl. The structures of the new compounds were… read more here.
Keywords: glucopyranosyl glucopyranosyl; acid glucopyranosyl; buds lonicera; triterpenoid saponins ... See more keywords