71536-53-3

Upstream product

• 86470-08-8 methyl 4,6-O-benzylidene-β-D-galactopyranoside 3-O-p-toluenesulfonate 
• 82186-00-3 methyl 4,6-O-benzylidene-3-O-diphenylmethyl-2-O-methyl-α-D-mannopyranoside 
• 82185-99-7 methyl 4,6-O-benzylidene-3-O-diphenylmethyl-α-D-mannopyranoside 
• 120408-72-2 Methyl 2,3-anhydro-4,6-O-(phenylmethylene)-β-D-allopyranoside 
• 124-41-4 sodium methylate 
• 2880-96-8 methyl 2,3-anhydro-4,6-O-benzylidene-β-D-gulopyranoside 
• 71117-36-7 methyl 4,6-O-(S)-benzylidene-β-D-galactopyranoside 
• 1824-94-8 methyl beta-D-galactopyranoside 

Downstream Products

• 3013-58-9 methyl 4,6-O-(S)-benzylidene-2,3-di-O-methyl-β-D-idopyranoside 

Relevant academic research and scientific papers

A scalable approach to obtaining orthogonally protected β-d-idopyranosides

A practical method to obtain orthogonally protected d-idopyranose from d-galactose has been developed, which is the first method to enable synthesis of the challenging β-d-idopyranoside linkage. The method relies on a key double inversion at O-2 and O-3 in an easily prepared d-galactose derivative, which proceeds regio- and stereoselectively through a 2,3-anhydrotalopyranoside; reaction using a selection of alkoxides affords exclusively the 3-O-alkylidopyranoside, which can be used to generate an orthogonally protected monosaccharide. The process is scalable and requires minimal purification, so it could be used to produce building blocks to aid in the synthesis of various β-idopyranose-containing oligosaccharide targets to further probe their biological functions.

REGIOSELECTIVE MONOALKYLATION OF THE VICINAL cis-DIOL GROUP IN MANNOPYRANOSIDES USING DIARYLDIAZOALKANES-TIN(II) CHLORIDE

Highly regioselective monoalkylations of the cis-2,3-diol group in mannopyranosides can be achieved with diaryldiazoalkanes in the presence of catalytic amounts of tin(II) chloride.With diazo(diphenyl)methane (1), its 4,4'-dimethyl (2) and 4,4'-dichloro (