ChemicalBook CAS DataBase List 2,3,4,6-TETRA-O-BENZYL-ALPHA-D-GLUCOPYRANOSE

2,3,4,6-TETRA-O-BENZYL-ALPHA-D-GLUCOPYRANOSE synthesis

3synthesis methods

Product Name:2,3,4,6-TETRA-O-BENZYL-ALPHA-D-GLUCOPYRANOSE
CAS Number:6564-72-3
Molecular formula:C34H36O6
Molecular Weight:540.66

Octa-O-Dissolves benzyl sucrose or octa-O-allyl sucrose in an organic solvent with the addition of hydrochloric acid without prior chromatographic purification, allows it to react for 20-60 minutes at temperatures of 50-60 °C. and then cleans the end product formed by crystallization. (ethanol, isopropanol, acetone, benzene, toluene or mixtures thereof can be used as solvents).

β-D-Glucopyranoside, 4-methylphenyl 2,3,4,6-tetrakis-O-(phenylmethyl)-1-thio-

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2,3,4,6-TETRA-O-BENZYL-ALPHA-D-GLUCOPYRANOSE

6564-72-3
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Yield:6564-72-3 62%

Reaction Conditions:

with N-Bromosuccinimide;water in water;acetone at 20; for 0.5 h;Concentration;

Steps:

4.c

0.71 mol of p-tolylthiobenzylgalactose was added to 4 mol of acetone, 2 mol of water was added, and 0.94 mol of N-bromosuccinimide was added under stirring at room temperature for 0.5 hour. After completion of the reaction, Treatment to obtain 0.62mol2,3,4,6-tetra-O-benzyl-D-galactopyranose in a yield of 62%.

References:

CN103694288,2016,B Location in patent:Paragraph 0044; 0047