Oligosaccharides and Glycosides Thereof

Oligosaccharides and Glycosides thereof.—Various steps in the synthesis of benzyl 2-acetamido-4,6-di-0-acetyl-3-0-(2-acetamido-3,4,6-tri-C -acetyl-2-deoxy- -D-glucopyranosyl)-2-deoxy-a-D-glucopyranoside using a functionalized popcorn polystyrene have been examined.  

A route used to synthesize oligosaccharides containing a-linked 2-amino-2-deoxy-D-glucopyranosyl residues has been described (see Vol. 9, p. 14).  

Reagents i, TrCl-py ii, AcaO-py iii, 80% AcOH iv, 2,3,4,6-tetra-O-acetyl-a-D-glucopyranosyl bromide-AgaO v, MeONa vi, 2,2, 3,3, 4,4, 6 -hepta-0-acetylgentiobiosyl bromide-AgjO 

The abilities of a-amylases to synthesize malto-oligosaccharides from a-D-glucopyranosyl fluoride have been reviewed related syntheses from (x-maltosyl fluoride were also discussed.  

R = the rest of the protein molecule Reagents i, RNHa-phosphate buffer ii, NaBHsCN 

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