83075-54-1

Upstream product

• 51433-19-3 methyl 4-O-benzyl-2,3-di-O-methyl-α-D-galactopyranoside 
• 10227-29-9 methyl 2.3-di-O-methyl-α-D-galactopyranoside 
• 89177-21-9 methyl 4-O-benzyl-2,3-di-O-methyl-6-O-triphenylmethyl-α-D-galactopyranoside 
• 27299-03-2 methyl 2,3-di-O-methyl-6-O-triphenylmethyl-α-D-galactopyranoside 
• 3013-58-9 methyl 4,6-O-benzylidene-2,3-di-O-methyl-α-D-galactopyranoside 
• 186581-53-3 diazomethane 

Relevant academic research and scientific papers

SYNTHESIS OF METHYL DERIVATIVES OF URONIC ACIDS. II. SYNTHESIS OF THE 2,3-, 2,4-, AND 2,4-DI- AND 2,3,4-TRI-O-MEETHYL ETHERS OF METHYL (METHYL α-D-GALACTOPYRANOSID)URONATE

Unidirectional methods are proposed for the synthesis of the 2,3-, 2,4-, and 3,4-di-, and 2,3,4-tri-O-methyl ethers of methyl (methyl α-D-galactopyranosid)uronate by the oxidation (CrO3-H2SO4-acetone) of the corresponding methyl O-benzyl-O-methyl-α-D-galactopyranosides having unsubstituted 6-OH groups to the corresponding (methyl O-benzyl-O-methyl-α-D-galactosid)uronic acids followed by the esterification with CH2N2 and catalytic hydrogenolysis of the benzyl groups.