Monosacáridos

L-Xylonic acid-1,4-lactone is an enzyme that functions as a glycolytic enzyme. It catalyzes the conversion of D-xylose to L-xylonic acid and L-xylonic acid-1,4-lactone. This enzyme is expressed in leukemia HL60 cells and is activated by acidic conditions. L-Xylonic acid-1,4-lactone has been shown to be catabolized by the enzyme xylanase. The kinetic properties of this reaction have been studied using mass spectrometric techniques and biochemical methods. The rate of the reaction was found to be dependent on the presence of divalent cations (Mg2+ or Ca2+) or monovalent ions (Na+ or K+). L-Xylonic acid 1,4 lactone also catabolizes glucose with a similar rate constant.

1,3,5-Tri-O-benzoyl-a-L-ribofuranose is a synthetic sugar with a complex carbohydrate structure. It is synthesized by the sequential addition of benzoyl groups to the alditol acetal of ribose. The molecular weight of this compound is 598.6 g/mol and its CAS number is 171866-30-1. 1,3,5-Tri-O-benzoyl-a-L-ribofuranose has been shown to be an excellent substrate for glycosylation and methylation reactions due to the presence of three reactive hydroxyl groups that can react with nucleophiles such as amines or thiols. Methylation reactions are typically carried out in the presence of sodium methoxide in methanol at room temperature for several hours. Glycosylation reactions require the use of activated glycosyl donors such as UDP glucose, UDP galactose

D-Erythrono-1.4-lactone is a carbohydrate that belongs to the group of oligosaccharides. It is a synthetic sugar with the CAS number 687-83-0. This carbohydrate is a monosaccharide with an oxygen atom in the alpha position, which has been fluorinated and methylated. The methylation on this sugar can be accomplished by either a glycosylation or click chemistry modification. This sugar can be used as an anti-tumor agent or as an adjuvant for chemotherapy treatments.

D-Galactose is a monosaccharide that is found in the cells of plants and animals. It can be synthesized from D-glucose by adding a D-galactose molecule to the alpha carbon of an existing glucose molecule. The resulting bond is called a glycosidic linkage. This process is called glycosylation. Glycosylation occurs when a sugar molecule reacts with another molecule, such as an amino acid, lipid, or nucleotide, to form what is known as a glycoside linkage. In this case, the sugar is D-galactose and the other molecules are either amino acids or lipids. The reaction between D-galactose and other molecules often results in polysaccharides and complex carbohydrates such as cellulose, chitin, and glycogen.
Methylation of D-galactose can produce methyl galactoside (CAS No. 1881-42-7), which

Glycolytic inhibitor; pro-apoptotic; anti-cancer agent

3,4-Di-O-acetyl-L-arabinal is a synthetic compound that belongs to the class of monofluorides. It has been synthesized from l-arabinose by a stereoselective process, with triflic acid as the catalyst and propargylation as the key step. The synthetic pathway starts from an acid hydrolysis of L-arabinose to yield 3,4-di-O-acetyl-L-arabinonic acid. This acid is then converted to 3,4 diacetyl L arabinonic acid with acetic anhydride and acetic acid in the presence of triethylamine. The final product is then obtained by reacting this intermediate with 1 equivalent of sodium fluoride in tetrahydrofuran (THF) using catalytic reduction with sodium borohydride at 0 °C. The major advantage of this synthetic process is that it provides two stereoisomers: (

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Methyl β-L-arabinopyranoside is a stereochemically pure monosaccharide that has been used to calibrate and quantify the conformational, stereochemical, and spectrometric methods. Methyl β-L-arabinopyranoside has a conformation that is restricted by the presence of an α-hydroxyl group at C2. The chloride ion can be used to monitor this conformation. The diameter of methyl β-L-arabinopyranoside can be measured with a micropipette and monitored using an aerosol detector. Methyl β-L-arabinopyranoside can also be quantified by mass spectrometry or spectrophotometry. The conformational, stereochemical, and spectrometric methods have been calibrated using methyl β-L-arabinopyranoside as a standard to determine their accuracy in measuring the size of other molecules.

1’,2’-Di-O-acetyl-5’-O-benzoyl-3’-deoxy-3’-fluoro-D-ribofuranose is a glycosylated monosaccharide that is custom synthesized for use as a fluorinated probe in the detection of protein glycosylation. This compound has been shown to react with Methyl groups to form a complex carbohydrate. 1’,2’-Di-O-acetyl-5’-O-benzoyl-3’ -deoxy -3’ -fluoro D ribofuranose is soluble in water and organic solvents such as ethanol or methanol. The CAS number for this compound is 522611–41–0.

Methyl 2,3-di-O-acetyl-4,6-O-(4-methoxybenzylidene)-a-D-mannopyranoside is a custom synthesis that contains a fluorinated sugar with a methyl group attached to the 4 position. The oligosaccharide is synthesized through click chemistry and has been modified with an acetate at the 6 position. The CAS number is 108739-53-0. The carbohydrate is a complex carbohydrate that can be found in nature or synthesized in the laboratory.