493019-63-9

Upstream product

• 100-51-6 benzyl alcohol 
• 190247-77-9 ethyl 4-O-acetyl-3,6-di-O-benzyl-2-deoxy-2-phthalimido-1-thio-β-D-galactopyranoside 
• 860640-03-5 Trifluoro-methanesulfonic acid (2R,3S,4R,5R,6S)-4-benzyloxy-2-benzyloxymethyl-5-(1,3-dioxo-1,3-dihydro-isoindol-2-yl)-6-ethylsulfanyl-tetrahydro-pyran-3-yl ester 
• 115533-35-2 ethyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-1-thio-β-D-glucopyranoside 

Downstream Products

• 493019-66-2 benzyl O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-(1->4)-2-acetamido-3,6-di-O-benzyl-2-deoxy-β-D-galactopyranoside 
• 493019-65-1 benzyl O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-(1->4)-3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-galactopyranoside 
• 493019-64-0 benzyl 3,6-di-O-benzyl-2-deoxy-2-phthalimido-β-D-galactopyranoside 

Relevant academic research and scientific papers

Synthesis and inhibitory activity of a di- and a trisaccharide corresponding to an erythrocyte glycolipid responsible for the nor polyagglutination

The polyagglutinable erythrocytes NOR contain unusual neutral glycolipids reactive with anti-NOR antibodies. The disaccharide α-D-Galp-(1→4)-D-GalpNAc and the trisaccharide α-D-Galp-(1→4)-β-D-GalpNAc-(1→3)-D-Gal corresponding to the non-reducing end of a NOR glycolipid (NOR1) were chemically synthesized. The syntheses were based on a common (1→4)-β-D-GalNAc precursor, and utilized benzyl glycoside and benzyl ether functions for persistent blocking of hydroxyls. The α-D-Galp-(1→4)-β-D-GalpNAc structural element has been found only recently in Nature, and derivatives thereof have not been synthesized before. Both the synthesized oligosaccharides inhibited specifically human anti-NOR antibodies, the trisaccharide being 300 times more active than the disaccharide.