138857-85-9

Upstream product

• 3253-22-3 1,2,3-tri-O-benzoyl-α-D-galactopyranoside 
• 105961-89-5 methyl pyruvate diphenyl dithioacetal 
• 138857-92-8 2,3-di-O-benzoyl-4,6-O-<1-(R)-methoxycarbonyl(ethylidene)>-α-D-galactopyranosyl chloride 
• 195063-73-1 benzyl 2,4,6-tri-O-benzoyl-β-D-glucopyranoside 
• 195063-72-0 benzyl 2,4,6-tri-O-benzoyl-3-O-chloroacetyl-β-D-glucopyranoside 
• 195063-71-9 2,4,6-tri-O-benzoyl-3-O-chloroacetyl-α-D-glucopyranosyl bromide 
• 30572-03-3 1,2,4,6-tetra-O-benzoyl-3-O-chloroacetyl-β-D-glucopyranoside 
• 72076-17-6 1,2,4,6-tetra-O-benzoyl-β-D-glucopyranoside 

Downstream Products

• 138922-04-0 methyl O-<(R)-2,3-di-O-benzoyl-4,6-O-(1-methoxycarbonylethylidene)-β-D-galactopyranosyl>-(1-3)-2,4,6-tri-O-benzoyl-β-D-glucopyranoside 
• 129192-92-3 methyl 2,3-di-O-benzoyl-4,6-O-<(R)-1-methoxycarbonylethylidene>-β-D-galactopyranoside 
• 138857-92-8 2,3-di-O-benzoyl-4,6-O-<1-(R)-methoxycarbonyl(ethylidene)>-α-D-galactopyranosyl chloride 

Relevant academic research and scientific papers

Unusual reactivity of pyruvated glycosyl donors during construction of rhizobial exopolysaccharide fragments

Two pyruvated galactosyl donors, 2,3-di-O-benzoyl-4,6-0-[1-(R)-methoxycarbonyl(ethylidene)]-α-D- galactopyranosyl chloride (6) and trichloroacetimidate 13, were coupled to position 3 of suitably protected mono and disaccharide benzyl glucoside acceptors. For both donors, an unusual high content of the α-(1→3)-linked products was obtained. The corresponding β-(1→3)-linked di- and trisaccharides are related to exopolysaccharides of Rhizobium leguminosarum.

Lewis Acid-Catalysed Anomerisation and Rearrangement of Alkyl D-Glycopyranosides During Acetalisation with Methyl Pyruvate: How to Utilise it for the Preparation of 1-(Carboxyethylidene)glycopyranosyl Donors

The preparation of 4,6-O-(1-methoxycarbonylethylidene)-D-glycopyranosides 5 starting from 2,3-di-O-benzoyl-D-glycopyranosides 1 and their 4,6-bis-O-trimethylsilyl ethers 2 using methyl 2,2-bis(phenylthio)propionate (4) and methyl pyruvate (3), respectivel