136597-23-4

Upstream product

• 20701-61-5 ethyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside 
• 75-36-5 acetyl chloride 
• 108-24-7 acetic anhydride 
• 604-69-3 β-D-glucose pentaacetate 
• 32934-24-0 ethyl 2,3,4,6-tetra-O-acetyl-1-thio-β-D-glucopyranoside 
• 7473-36-1 ethyl 1-thio-β-D-glucopyranoside 
• 108-05-4 vinyl acetate 

Downstream Products

• 136597-26-7 C₇₀H₇₄O₁₇ 
• 136597-25-6 Acetic acid (2R,4aR,6R,7R,8S,8aR)-6-bromo-2-phenyl-7-((2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yloxy)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 
• 136597-24-5 Acetic acid (2R,4aR,6S,7R,8S,8aR)-6-ethylsulfanyl-2-phenyl-7-((2R,3R,4S,5R,6R)-3,4,5-tris-benzyloxy-6-benzyloxymethyl-tetrahydro-pyran-2-yloxy)-hexahydro-pyrano[3,2-d][1,3]dioxin-8-yl ester 
• 185797-97-1 O-(3-O-acetyl-4,6-O-benzylidene-2-chloroacetyl-β-D-glucopyranosyl)-(1->4)-O-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosylazide 
• 185797-98-2 O-(3-O-acetyl-4,6-O-benzylidene-β-D-glucopyranosyl)-(1->4)-O-(3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosyl)-(1->4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-glucopyranosylazide 

Relevant academic research and scientific papers

Regioselective C-3-O-acylation and O-methylation of 4,6-O-benzylidene-β-D-gluco- and galactopyranosides displaying a range of anomeric substituents

The regioselective C-3-O-acylation and O-methylation of a range of 4,6-O-benzylidene-β-D-gluco- and galactopyranosides has been studied. Regioselectivity is achieved by forming the copper chelate of the 2,3-diol using either sodium hydride and copper(II) chloride, or copper(II) acetylacetanoate, or copper(II) acetate, prior to introduction of the acylating or methylating agent.

Regioselective C-3-O-acylation and O-alkylation of 4,6-O-benzylidene-β-D-glucopyranoside derivatives displaying a range of anomeric substituents

Regioselective C-3-O-acylation and O-alkylation of ethyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside, phenyl 4,6-O-benzylidene-β-D-glucopyranoside and phenyl 4,6-O-benzylidene-1-seleno-β-D-glucopyranoside is described. Regioselectivity is obtained by first treating the benzylidene diols with sodium hydride and copper (II) chloride to form a THF soluble copper chelate.

Regioselective Lipase-catalysed acylation of 4,6-O-benzylidene-α- and - β-D-pyranoside derivatives displaying a range of anomeric substituents

The application of Lipase enzymes to effect regioselective C-3-O- acylation of 4,6-O-benzylidene-β-D-gluco- and -galactopyranosides displaying a range of anomeric substituents, and C-2-O-acylation of phenyl 4,6-O- benzylidene-α-D-glucopyranoside and ethyl 4,6-O-benzylidene-1-thio-α-D- glucopyranoside is reported. In particular this method has allowed introduction of a variety of acyl protecting groups at the C-3 hydroxyl group of ethyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside 11.

Regioselective lipase-catalysed acylation of 4,6-O-benzylidene-β-D-pyranoside derivatives displaying a range of anomeric substituents

The application of lipase enzymes to effect regioselective C-3-O-acylation of 4,6-O-benzylidene-β-D-gluco- and galactopyranosides displaying a range of anomeric substituents is reported. In particular this method has allowed introduction of a variety of acyl protecting groups at the C-3 hydroxyl group of ethyl 4,6-O-benzylidene-1-thio-β-D-glucopyranoside 9.

A new strategy for the synthesis of the core trisaccharide of asparagine-linked sugar chains

The core trisaccharide common to all asparagine-linked glycoprotein olisosaccharides was synthesized using two novel processes: 1) regioselective acetylation using lipase, and 2) inversion of the C-2 hydroxyl group of the glucose residue in a glucosyl chi