Results 1 to 10 of about 2,768 (157)

Total synthesis of hexuronic acids

open access: yesCarbohydrate Research, 1977
Six stereoisomeric hexuronic acids (tert-butyl esters of methyl pyranosides) having the altro, manno, gluco, gulo, galacto, and talo configurations were obtained from cis,trans-tert-butyl 2-methoxy-5,6-dihydro-2H-pyran-6-carboxylate (5). The synthesis involved the following successive steps: epoxidation of the double bond in 5, opening of the epoxides ...
A Zamojski
exaly   +4 more sources

Electrophoresis of hexuronic acids

open access: yesJournal of Chromatography A, 1970
Marlys J. St. Cyr
exaly   +4 more sources

EFFICIENCY OF COMBINED APPLICATION OF L-ARGININE AND NUCLEAR FACTOR Β κ B INHIBITOR IN CORRECTING CONNECTIVE TISSUE DISRUPTION IN THE SKIN OF RATS UNDER EXCESSIVE SODIUM NITRATE INTAKE

open access: yesŽurnal Grodnenskogo Gosudarstvennogo Medicinskogo Universiteta, 2018
Objectives: to investigate the effects produced by the combined action of L-arginine and the NF-κB inhibitor ammonium pyrrolidine dithiocarbamate (PDTC) on the markers of connective tissue disruption in the skin of white rats and its biomechanical ...
Khmil D. A.   +2 more
doaj   +2 more sources

G.L.C. of the O-trimethylsilyl derivatives of hexuronic acids

open access: yesCarbohydrate Research, 1976
The free acids, sodium salts, and lactones of several hexuronic acids have been studied as their O-trimethylsilyl derivatives by gas-liquid chromatography using SE-30 and XE-60 liquid phases. Silylation was best performed in methyl sulphoxide. The equilibrium between the various forms of a hexuronic acid in methyl sulphoxide was also studied by g.l.c ...
J F Kennedy
exaly   +4 more sources

EFFECTS OF MODULATING NF ΚB AND NRF2 SIGNALING PATHWAYS ON THE DEPOLYMERIZATION OF CONNECTIVE TISSUE BIOPOLYMERS IN THE RAT SMALL INTESTINE UNDER SURGICAL TRAUMA FOLLOWING SINGLE PROLONGED STRESS

open access: yesПроблеми екології та медицини
This study aimed to investigate the effects of ammonium pyrrolidinedithiocarbamate (an inhibitor of NF κB activation) and sulforaphane (an inducer of the Nrf2/antioxidant response element (ARE) signaling pathway) on the depolymerization processes of ...
R.M. Ryabushko   +2 more
doaj   +2 more sources

Hexuronic Acid as the Antiscorbutic Factor [PDF]

open access: yesNature, 1932
A CHARACTERISTIC property of Prof. Szent-Gyorgyi's hexuronic acid is its behaviour towards iodine. Two atoms of iodine are taken up in aqueous solution (neutral or acid) with formation of two molecules of hydrogen iodide. We find that this is due to oxidation at a double bond.
E. L. HIRST, R. J. W. REYNOLDS
  +11 more sources

Extraction and Optimization of Fucoidan From Sargassum muticum Using Acidic Eutectic Solvents and Evaluation of Their Effects on Fibroblast Cell Lines. [PDF]

open access: yesChemistryOpen
Fucoidan, a sulfated polysaccharide extracted from the cell wall of macroalgae such as S. muticum, exhibits promising biological properties. This study investigated a green extraction using deep eutectic solvents (DESs), with an emphasis on process optimization and bioactive evaluation of fucoidan.
Leite M   +8 more
europepmc   +2 more sources

Erucastrum virgatum subsp. virgatum (Brassicaceae) Endemic to Sicily (Italy): Biological Properties and Phenolic Content of Leaf Extracts. [PDF]

open access: yesChem Biodivers
ABSTRACT The present work reports a comparative study between extracts obtained by different methods (ultrasonic bath‐assisted extraction, maceration, decoction, and Soxhlet extraction) from the leaves of Erucastrum virgatum subsp. virgatum collected in Sicily (Italy), using ethanol and water as “green” solvents.
Galletta B   +8 more
europepmc   +2 more sources

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