Glycosides

Distribution by Scientific Domains
Distribution within Chemistry

Kinds of Glycosides

  • cardiac glycoside
  • flavanone glycoside
  • flavonoid glycoside
  • flavonol glycoside
  • iridoid glycoside
  • isoflavone glycoside
  • kaempferol glycoside
  • lignan glycoside
  • monoterpene glycoside
  • new glycoside
  • phenolic glycoside
  • phenylpropanoid glycoside
  • pregnane glycoside
  • quercetin glycoside
  • steroidal glycoside
  • triterpene glycoside
  • triterpenoid glycoside

  • Terms modified by Glycosides

  • glycoside hydrolase
  • glycoside hydrolase family

  • Selected Abstracts


    HYDROLYSIS OF ISOFLAVONE GLYCOSIDES IN SOY MILK BY ,-GALACTOSIDASE AND ,-GLUCOSIDASE

    JOURNAL OF FOOD BIOCHEMISTRY, Issue 1 2009
    THUY T. PHAM
    ABSTRACT The objective of this study was to assess the potential of pure ,-galactosidase and ,-glucosidase for hydrolyzing isoflavone glycosides to aglycones in soy milk. Both pure ,-galactosidase and ,-glucosidase were added at various concentrations (0.5, 1.0, 2.0 and 4.0 U/mL) to soy milk made from 4% soy protein isolate and incubated at 37C for up to 240 min. Isoflavones were quantified using high-performance liquid chromatography. The isoflavone contents of soy milk before and after autoclaving were also compared. ,-Glucosidase and ,-galactosidase were both able to hydrolyze the ,-glucosidic linkages in isoflavone glycosides. A range of 43.3 to 77.2% of the total isoflavone glycosides was hydrolyzed at various ,-galactosidase concentrations. The ,-glucosidase hydrolyzed isoflavone glycosides more efficiently than ,-galactosidase. At the most diluted ,-glucosidase concentration (0.5 U/mL), 86.6% of isoflavone glycosides were hydrolyzed to aglycones at 240 min. PRACTICAL APPLICATIONS Isoflavone glycosides, which are mainly found in the bean family, are the inactive forms of isoflavones. However, aglycones, which are the nonsugar component of a glycoside molecule that results from hydrolysis of the isoflavone glycosides, are the biologically active forms. Because of their similarity to female hormone, they are considered a "natural way" to relieve the menopausal symptoms as they prevent certain cancers and improve bone health. Only a small amount of the total isoflavones, however, exists in the aglycone forms in nature. A novel method to produce aglycones from natural isoflavones is highly important. ,-Glucosidase has been claimed to be the only enzyme which is able to hydrolyze isoflavone glycosides to aglycones. However, other enzymes could hydrolyze isoflavone glycosides more efficiently and could be easier to produce. This paper investigates the ability of ,-galactosidase to biotransform isoflavone glycosides to aglycones, as the source of the enzyme is abundant. [source]


    Differential regulation of closely related R2R3-MYB transcription factors controls flavonol accumulation in different parts of the Arabidopsis thaliana seedling

    THE PLANT JOURNAL, Issue 4 2007
    Ralf Stracke
    Summary The genes MYB11, MYB12 and MYB111 share significant structural similarity and form subgroup 7 of the Arabidopsis thaliana R2R3-MYB gene family. To determine the regulatory potential of these three transcription factors, we used a combination of genetic, functional genomics and metabolite analysis approaches. MYB11, MYB12 and MYB111 show a high degree of functional similarity and display very similar target gene specificity for several genes of flavonoid biosynthesis, including CHALCONE SYNTHASE, CHALCONE ISOMERASE, FLAVANONE 3-HYDROXYLASE and FLAVONOL SYNTHASE1. Seedlings of the triple mutant myb11 myb12 myb111, which genetically lack a complete subgroup of R2R3-MYB genes, do not form flavonols while the accumulation of anthocyanins is not affected. In developing seedlings, MYB11, MYB12 and MYB111 act in an additive manner due to their differential spatial activity; MYB12 controls flavonol biosynthesis mainly in the root, while MYB111 controls flavonol biosynthesis primarily in cotyledons. We identified and confirmed additional target genes of the R2R3-MYB subgroup 7 factors, including the UDP-glycosyltransferases UGT91A1 and UGT84A1, and we demonstrate that the accumulation of distinct and structurally identified flavonol glycosides in seedlings correlates with the expression domains of the different R2R3-MYB factors. Therefore, we refer to these genes as PFG1,3 for ,PRODUCTION OF FLAVONOL GLYCOSIDES'. [source]


    Two New Triterpenoids and a Steroidal Glycoside from the Aerial Parts of Ocimum basilicum.

    CHEMINFORM, Issue 41 2007
    Bina Shaheen Siddiqui
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF. [source]


    Synthesis of the Trisaccharide Repeating Unit of the Atypical O-Antigen Polysaccharide from Danish Helicobacter pylori Strains Employing the 2,-Carboxybenzyl Glycoside.

    CHEMINFORM, Issue 7 2005
    Yong Tae Kwon
    No abstract is available for this article. [source]


    Three Diterpenoids (Excoecarins V1,V3) and a Flavanone Glycoside from the Fresh Stem of Excoecaria agallocha.

    CHEMINFORM, Issue 12 2004
    Tenji Konishi
    No abstract is available for this article. [source]


    Constituents with Radical Scavenging Effect from Opuntia Dillenii: Structures of New ,-Pyrones and Flavonol Glycoside.

    CHEMINFORM, Issue 17 2003
    Yingkun Qiu
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]


    Triumfettoside (Ia), a New Alkaloidal Steroid Glycoside and Triumfettosterol (Ib), a New Sterol from Triumfetta flavescens

    CHEMINFORM, Issue 7 2003
    B. Ahmed
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]


    A New Pregnane Glycoside (I) and a Furostanol Glycoside from Digitalis cariensis

    CHEMINFORM, Issue 7 2003
    H. Kirmizibekmez
    Abstract For Abstract see ChemInform Abstract in Full Text. [source]


    A Novel Sulfated Holostane Glycoside from Sea Cucumber Holothuria leucospilota

    CHEMISTRY & BIODIVERSITY, Issue 7 2010
    Hua Han
    Abstract A new sulfated holostane glycoside, leucospilotaside B (1), together with the two related structurally known compounds holothurin B2 (2) and holothurin B (3), was isolated from sea cucumber Holothuria leucospilota collected from the South China Sea. The structure of 1 was elucidated by spectral analysis (1H-, 13C-, and 2D-NMR, ESI-MS, and HR-ESI-MS) and chemical methods. The compounds 1,3 possess the same disaccharide moiety, but were different in the side chains of the triterpene aglycone. Compound 1 showed significant cytotoxicities against four human tumor cell lines, HL-60, MOLT-4, A-549, and BEL-7402. [source]


    A New Triterpenoid Saponin and a New Glycoside from Epigynum aurilum

    CHINESE JOURNAL OF CHEMISTRY, Issue 12 2003
    Jian-Xin Cao
    Abstract A new triterpenoid saponin with novel sugar moiety (1), a new trisaccharide derivative (2), as well as a known monosaccharide derivative (3), were isolated from the dried stem of Epigynum aurilum. The structures of compounds 1 and 2 were determined by MS and NMR spectram analyses. [source]


    [4+2]/HyBRedOx Approach to C -Naphthyl Glycosides: Failure in the Projuglone Series and Reinvestigation of the HyBRedOx Sequence

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 3 2009
    Lucie Maingot
    Abstract C -Naphthyl glycosides displaying a 1,5-difunctionality on the naphthalene ring that can undergo oxidation to bromonaphthoquinone are key intermediates in the synthesis of natural C -aryl glycoside analogues. In this area, sugar-modified derivatives are of specific interest, but their synthesis is challenging. The de novo access to such compounds has been investigated through a [4+2] heterocycloaddition route, previously validated in a model series. For this purpose, two new dienophiles, conveniently protected at the phenolic positions, were synthesized. From an extensive study of their reactivity towards a range of 4-hetero-substituted ("prosugar") heterodienes, the expected heteroadducts were stereoselectively obtained in acceptable yields. Application of the hydroboration/reduction/oxidation sequence did not afford the target C -glycosides from the reduced adducts. The negative effect of the conformational bias of the substrate on this tandem reaction is discussed.(© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2009) [source]


    An Expeditious Synthesis of N -Acetylneuraminic Acid ,- C -Glycosyl Derivatives (",- C -Glycosides") from the Anomeric Acetates

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 19 2007
    Adeline Malapelle
    Abstract The reductive metallation of the readily available peracetylated derivatives of methyl N -acetylneuraminate 3a and 3b by samarium diiodide without any additive generates the corresponding anomeric samarium(III) organometallics. These intermediates react efficiently with carbonyl compounds under Barbier conditions, providing a fast synthesis of C -ketosides. The ,- and ,-acetates are equally effective, and excellent yields are obtained for coupling with cyclic ketones. The procedure has been conveniently applied to the synthesis of a C -ketoside of N -acetylneuraminic acid with an attached linker, ready to use as a building block in the elaboration of multivalent biological probes. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2007) [source]


    Thermus thermophilus Glycosynthases for the Efficient Synthesis of Galactosyl and Glucosyl ,-(1,3) - Glycosides

    EUROPEAN JOURNAL OF ORGANIC CHEMISTRY, Issue 10 2005
    Jullien Drone
    Abstract Inverting mutant glycosynthases were designed according to the Withers strategy, starting from wild-type Thermus thermophilus retaining Tt-,-Gly glycosidase. Directed mutagenesis of catalytic nucleophile glutamate 338 by alanine, serine, and glycine afforded the E338A, E338S, and E338G mutant enzymes, respectively. As was to be expected, the mutants were unable to catalyze the hydrolysis of the transglycosidation products. In agreement with previous results, the E338S and E338G catalysts were much more efficient than E338A. Moreover, our results showed that these enzymes were inactive in the hydrolysis of the ,- D -glycopyranosyl fluorides used as donors, and so suitable experimental conditions, under which the rate of spontaneous hydrolysis of the donor was considerably lower than that of enzymatic transglycosidation, provided galactosyl and glucosyl ,-(1,3) - glycosides in yields of up to 90,%. The structure of native Tt-,-Gly available in the Protein Data Bank offers a good basis for interpretation of our results by means of molecular modeling. Thus, in the case of the E338S mutant, a lower energy of the system was obtained when the donor and the acceptor were in the right position to form the ,-(1,3) - glycosidic bond. (© Wiley-VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2005) [source]


    Three New Glycosides from Viburnum plicatumThunb. var. tomentosumMiq.

    HELVETICA CHIMICA ACTA, Issue 2 2010
    Koichi Machida
    Abstract Three new glycosides, 7- O -tigloylsecologanol (1), 7- O -tigloylsecologanolic acid (2), and 3,- O -[(2S)-2-methylbutanoyl]henryoside (3), together with seven known ones, were isolated from the leaves of Viburnum plicatumThunb. var. tomentosumMiq. Their structures were established on the basis of spectral and chemical data. [source]


    Two New Kaempferol Glycosides from Androsace umbellata

    HELVETICA CHIMICA ACTA, Issue 7 2009
    Jun Lei
    Abstract Two new kaempferol glycosides, 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-7-(, - L -rhamnopyranosyloxy)-4H -chromen-3-yl 2- O -acetyl-3- O - , - D -glucopyranosyl- , - L -rhamnopyranoside (1) and 5-hydroxy-2-(4-hydroxyphenyl)-4-oxo-7-(, - L -rhamnopyranosyloxy)-4H -chromen-3-yl , - D -glucopyranosyl-(1,2)-6- O -[(2E)-3-(4-hydroxyphenyl)prop-2-enoyl]- , - D -glucopyranosyl-(1,2)- , - D -glucopyranoside (2), along with ten known compounds, were isolated from the 95% EtOH extract of the whole plant of Androsace umbellata. The structures of the new glycosides were determined on the basis of detailed spectroscopic analyses, including 1D- and 2D-NMR, MS, and chemical methods. [source]


    Phenylethyl Glycosides from Globularia alypum Growing in Turkey

    HELVETICA CHIMICA ACTA, Issue 8 2008
    Hasan K, bekmez
    Abstract From the leaves of Globularia alypum, three new phenylethyl glycosides, namely galypumosides A (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -[(E)- p -coumaroyl]- , -glucopyranoside; 1), B (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -[(E)-feruloyl]- , -glucopyranoside; 2), and C (=2-(3,4-dihydroxyphenyl)ethyl O - , -rhamnopyranosyl-(1,3)-4- O -[(E)-caffeoyl]-6- O -menthiafoloyl- , -glucopyranoside; 3), were isolated, together with two known phenylethyl glycosides, calceolarioside A and verbascoside. Eight iridoid glucosides, catalpol, globularicisin, globularin, globularidin, globularinin, globularimin, lytanthosalin, and alpinoside, a flavon glycoside, 6-hydroxyluteolin 7- O -sophoroside, a lignan glycoside, syringaresinol 4,- O - , -glucopyranoside, and a phenylpropanoid glycoside, syringin, were also obtained and characterized. The structures of the isolates were elucidated on the basis of 1D- and 2D-NMR experiments as well as HR-MALDI-MS. [source]


    Five New Xanthenone O -Glycosides from the Roots of Polygala sibirica L.

    HELVETICA CHIMICA ACTA, Issue 5 2008
    Yu-Hong Zhou
    Abstract Five new xanthenone O -glycosides, sibiricaxanthone C (1), sibiricaxanthone D (2), sibiricaxanthone E (3), sibiricaxanthone F (4), and sibiricaxanthone G (5) were isolated from the roots of Polygala sibirica L., together with the six known xanthenone glycosides 6,11. The structures of new compounds were elucidated on the basis of spectral data and acid hydrolysis. [source]


    Novel Steroidal Glycosides from two Indian Caralluma species, C. stalagmifera and C. indica

    HELVETICA CHIMICA ACTA, Issue 2 2006
    Olaf Kunert
    Abstract New steroidal glycosides, stalagmosides I,V (1,5) and indicosides I and II (7 and 8), together with the known compounds carumbelloside III, lasianthoside,A, and lasianthoside,B, were isolated from whole plants of Caralluma stalagmifera and Caralluma indica, respectively. Their structures were elucidated by extensive NMR spectroscopic studies. [source]


    A New Lignan and Four New Lignan Glycosides from Mananthes patentiflora

    HELVETICA CHIMICA ACTA, Issue 2 2006
    Junmian Tian
    Abstract A new lignan, 5-hydroxyjusticidin,A (=,9-(1,3-benzodioxol-5-yl)-5-hydroxy-4,6,7-trimethoxynaphtho[2,3- c]furan-1(3H)-one; 1), and four new diphyllin-type lignan glycosides, mananthosides C,F (2,5), containing glucosyl (Glc), arabinosyl (Ara), galactosyl (Gal), and/or apiosyl residues, have been isolated from Mananthes patentiflora, together with five known compounds. Their structures and configurations were elucidated by in-depth 1D- and 2D-NMR experiments, as well as MS analysis. [source]


    Phenyl and Phenylethyl Glycosides from Picrorhiza scrophulariiflora

    HELVETICA CHIMICA ACTA, Issue 3 2004
    Sheng-Xiong Huang
    Three new phenyl glycosides, scrophenoside A (1), B (2), and C (3), and two new phenylethyl glycosides, scroside D (4) and scroside E (5), were isolated from the stem of Picrorhiza scrophulariifloraPennell (Scrophularlaceae), besides five known compounds. On the basis of spectroscopic evidence, the structures of the new compounds were elucidated as 4-acetyl-2-methoxyphenyl 6- O -[4-(, - D -glucopyranosyloxy)vanilloyl]- , - D -glucopyranoside (1), 4-acetylphenyl 6- O -[(E)- p -coumaroyl]- , - D -glucopyranoside (2), 4-[(1R)- and (1S)-1-hydroxyethyl]-2-methoxyphenyl , - D -glucopyranoside (3a and 3b, resp.), 2-(3,4-dihydroxyphenyl)ethyl O - , - D -glucopyranosyl-(1,3)-4- O -[(E)-feruloyl]- , - D -glucopyranoside (4), and 2-(3,4-dihydroxyphenyl)ethyl O - , - D -glucopyranosyl-(1,3)-6- O -[(E)-feruloyl]- , - D -glucopyranoside (5). [source]


    Novel Polyoxygenated Spirostanol Glycosides from the Rhizomes of Helleborus orientalis

    HELVETICA CHIMICA ACTA, Issue 2 2003
    Yoshihiro Mimaki
    The two new polyoxygenated spirostanol bisdesmosides 1 and 2 and the new trisdesmoside 3, named hellebosaponin A (1), B (2), and C (3), respectively, were isolated from the MeOH extract of the rhizomes of Helleborus orientalis. The structures of the new compounds were elucidated as (1,,3,,23S,24S)-21-(acetyloxy)-24-[(, - D -fucopyranosyl)oxy]-3,23-dihydroxyspirosta-5,25(27)-dien-1-yl O-, - D -apiofuranosyl-(1,3)- O -(4- O -acetyl- , - L -rhamnopyranosyl)-(1,2)- O -[, - D -xylopyranosyl-(1,3)]- , - L -arabinopyranoside (1), (1,,3,,23S,24S)- 21-(acetyloxy)-24-{[O - , - D -glucopyranosyl-(1,4)- , - D -fucopyranosyl]oxy}-3,23-dihydroxyspirosta-5,25(27)-dien-1-yl O - , - D -apiofuranosyl-(1,3)- O -(4- O -acetyl- , - L -rhamnopyranosyl)-(1,2)- O -[, - D -xylopyranosyl-(1,3)]- , - L -arabinopyranoside (2), and (1,,3,,23S,24S)-24-[(, - D -fucopyranosyl)oxy]-21-{[O - , - D -glucopyranosyl-(1,2)- , - D -galactopyranosyl]oxy}-3,23-dihydroxyspirosta-5,25(27)-dien-1-yl O - , - D -apiofuranosyl-(1,3)- O -(4- O -acetyl- , - L -rhamnopyranosyl)-(1,2)- O -[, - D -xylopyranosyl-(1,3)]- , - L -arabinopyranoside (3), respectively, on the basis of detailed spectroscopic studies and chemical evidence. [source]


    Effect of Lactulose on Biotransformation of Isoflavone Glycosides to Aglycones in Soymilk by Lactobacilli

    JOURNAL OF FOOD SCIENCE, Issue 3 2008
    T.T. Pham
    ABSTRACT:,Lactobacillus acidophilus 4461, L. acidophilus 4962, L. casei 290, and L. casei 2607 were used to hydrolyze isoflavone glycosides (IG) to biologically active forms,isoflavone aglycones (IA),in soymilk (SM) prepared from soy protein isolate (SPI) and soymilk supplemented with 0.5% (w/v) of lactulose (SML). L. acidophilus 4461 utilized the highest level of lactulose (3.01 mg/mL) and L. acidophilus 4962 utilized the least (0.86 mg/mL) at 24 h of incubation. The pH values decreased to 4.00 to 5.00 in SML, while they remained relatively high (6.15 to 6.36) in SM. Supplementation with lactulose significantly (P < 0.05) enhanced the viable counts of all the 4 Lactobacillus strains. At the end of incubation, the viable counts of Lactobacillus ranged from 8.08 to 8.25 log CFU/mL in SML compared to 6.99 to 7.11 log CFU/mL in SM. Supplementation with lactulose increased the biotransformation of IG to IA after 6 h of incubation. The presence of lactulose in the medium enhanced the biotransformation level of IG to IA by Lactobacillus up to 21.9%. The hydrolysis level of malonyl genistin and acetyl genistin in SML was much higher than in SM by all the 4 probiotic organisms. The biotransformation of IG to IA occurred rapidly during the 1st 12 h of incubation in both SML and SM. Among the 4 Lactobacillus strains, L. acidophilus 4461 biotransformed the highest level (88.8%) of IG to IA in SML compared to 68.2% in SM after 24 h of incubation. [source]


    Biotransformation of Isoflavone Glycosides by Bifidobacterium animalis in Soymilk Supplemented with Skim Milk Powder

    JOURNAL OF FOOD SCIENCE, Issue 8 2007
    T.T. Pham
    ABSTRACT:, Two probiotic strains, Bifidobacterium animalis A and B, were used for the biotransformation of isoflavone glycosides in soymilk prepared from soy protein isolate (SPI) supplemented with skim milk powder (SMP) (SSMP). Unsupplemented soymilk (USM) and reconstituted skim milk powder (RSMP) were used as controls. The numbers of viable microorganisms in these products were enumerated. Lactose and isoflavone contents were quantified using high-performance liquid chromatography (HPLC). Our results showed that there was significantly higher biotransformation of isoflavone glycosides to aglycones in SSMP than that in USM. The levels of biotransformation were 83.96% and 85.43% for B. animalis A and B, respectively, compared to 74.30% and 72.82% for the USM. In addition, lactose utilization by both strains in SSMP was also higher than that in RSMP. At 24 h, 21.16 mg/mL of lactose was utilized in SSMP by B. animalis A compared with that of 16.88 mg/mL in RSMP. Consequently, the pH of SSMP was lower (3.80) than RSMP (4.00). However, the number of viable bacteria in SSMP was slightly lower than that in RSMP but significantly higher than that in USM. It appears that SMP enhanced the biotransformation of isoflavone glycosides to aglycones and SPI increased the lactose utilization by B. animalis A and B. [source]


    Conversion of Isoflavone Glycosides to Aglycones in SoyLife and Soymeal Using ,-glycosidase

    JOURNAL OF FOOD SCIENCE, Issue 2 2003
    L. Xie
    ABSTRACT: Conversion of isoflavones from glycosides to aglycones in SoyLife and soymeal using varying concentrations of ,-glycosidase, and different pH conditions and temperatures was investigated. The best conditions for the conversion of glycosides to aglycones were pH 5.0, 50 °C, and 5 h incubation with 5 units ,-glycosidase/g Soy Life and 1.5 units/g soymeal. Under these conditions, the amount of genistein, daidzein, and glycitein in Soy Life treated with ,-glycosidase were 4.22, 11.52, and 11.85 ,mol/g compared to untreated controls of 0.26, 0.97, and 4.43 ,mol/g, respectively. In soymeal, the amounts were 3.21, 2.02, and 2.12 ,mol/g compared to untreated controls of 1.23, 1.25, and 1.51 ,mol/g, respectively. Mole percent recovery of genistein was 87% in Soy Life and 80% in soymeal, respectively. [source]


    Antibacterial activity of Harungana madagascariensis leaf extracts

    PHYTOTHERAPY RESEARCH, Issue 2 2002
    A. S. Okoli
    Abstract Aqueous extracts of the leaf of Harungana madagascariensis were analysed phytochemically and evaluated for antimicrobial activity against strains of Bacillus subtilis, Staphylococcus aureus, Escherichia coli, Salmonella typhi and Pseudomonas aeruginosa. Glycosides, tannins, saponins, flavonoids and alkaloids were detected in the plant material. B. subtilis, E. coli and S. typhi, but not Ps. aeruginosa, showed susceptibility at MICs of 2.0 and 15.6,mg/mL; and MBCs of 2.0,3.9,mg/mL and 15.6,31.3,mg/mL, respectively, for the cold and hot extracts. Staph. aureus showed susceptibility only to the hot extract. Concentrations of 2.5,10.0,mg/mL of the cold extract killed over 7 log10 of the test bacterial population within 30,60,min of exposure. The hot extract needed higher concentrations and longer treatment to achieve similar levels of bacterial cell killing. The results provide a rationalization for the traditional use of H. madagascariensis leaf extracts for the treatment of gastrointestinal disorders. Copyright © 2002 John Wiley & Sons, Ltd. [source]


    Stereoselective Synthesis of ,-Keto-deoxy- D - glycero - D - galacto- nonulosonic Acid Glycosides by Means of the 4,5- O -Carbonate Protecting Group,

    ANGEWANDTE CHEMIE, Issue 17 2010
    David Crich Prof.
    Konkurrenzlos: Ein 1-Adamantylthioglycosid-Derivat der Nonulosonsäure KDN mit 4,5- O -Carbonat-Schutzgruppe fungiert bei Aktivierung mit N -Iodsuccinimid (NIS) und Trifluormethansulfonsäure (TfOH) als hoch effizienter und ,-selektiver KDN-Donor (siehe Schema). Glycosylierungen, die in Gegenwart dieser Schutzgruppe ausgeführt werden, laufen ohne konkurrierende Glycalbildung ab. [source]


    A Versatile Transport Network for Sequestering and Excreting Plant Glycosides in Leaf Beetles Provides an Evolutionary Flexible Defense Strategy

    CHEMBIOCHEM, Issue 13 2009
    Sabrina Discher
    No abstract is available for this article. [source]


    ChemInform Abstract: Three Novel Sesquiterpene Glycosides of Sarcandra glabra

    CHEMINFORM, Issue 39 2009
    Xiao-ru Hu
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


    ChemInform Abstract: Cyanogenic (Ia) and Non-cyanogenic Glycosides (Ib),(Id) from Manihot esculenta (Euphorbiaceae)

    CHEMINFORM, Issue 28 2009
    Edet M. Anam
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]


    ChemInform Abstract: Structures of New Triterpene Glycosides, Malbrancheosides A,D, from Malbranchea filamentosa.

    CHEMINFORM, Issue 40 2008
    Daigo Wakana
    Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a "Full Text" option. The original article is trackable via the "References" option. [source]