20770-95-0

Upstream product

• 67-56-1 methanol 
• 3370-81-8 3-O-methyl-D-glucopyranose 
• 1125-88-8 benzaldehyde dimethyl acetal 
• 81825-61-8 methyl 2-O-acetyl-4,6-O-benzylidene-3-O-methyl-α-D-galactopyranoside 
• 3162-96-7 methyl 4,6-O-benzylidene-α-D-glucopyranoside 
• 74-88-4 methyl iodide 

Downstream Products

• 134407-70-8 (2R,3R,4S,5R,6S)-2-Benzyloxymethyl-4,6-dimethoxy-tetrahydro-pyran-3,5-diol 
• 134407-69-5 (2S,3R,4R,5R,6R)-5-Benzyloxy-6-hydroxymethyl-2,4-dimethoxy-tetrahydro-pyran-3-ol 
• 134407-71-9 (2S,3R,4R,5R,6R)-5-Benzyloxy-2,4-dimethoxy-6-methoxymethyl-tetrahydro-pyran-3-ol 
• 134407-72-0 ((3S,4R,5R,6R)-5-Benzyloxy-4-methoxy-6-methoxymethyl-tetrahydro-pyran-3-yloxy)-acetic acid methyl ester 
• 81825-63-0 methyl 2-O-benzyl-4,6-O-benzylidene-3-O-methyl-α-D-galactopyranoside 

Relevant academic research and scientific papers

Determination of the substituent distribution in O-sulfonylbutyl-(1→4)-glucans

A method has been developed to determine the distribution of substituents in the glucose units of sulfonylbutylethers of cyclomaltoheptaose (β-cyclodextrin). This method involves hydrolysis of the glucosidic linkages, permethylation, formation of sulfonylchlorides and subsequent transformation to the permethylated sulfonylfluoride derivatives. The latter were thermostable and could be analyzed by GLC and identified by EI and CIMS. For confirmation, the 2-, 3-, and 6-O-substituted standard compounds were independently synthesized and characterized by NMR and GLC-MS. Copyright (C) 2000 Elsevier Science Ltd.

ALKYLATION OF METHYL 4,6-O-BENZYLIDENE-α-D-GALACTOPYRANOSIDE

The partial alkylation of methyl 4,6-benzylidene-α-D-galactopyranoside in dimethylformamide and dimethyl sulfoxide in the presence of barium oxide and hydroxide is described.It has been shown that methylation and benzylation lead predominantly to the 3-al