Abstract
2-Acetamido-2- deoxy-6- O-, -xylopyranosyl- O- D-glucopyranose has been synthesized in crystalline form by condensation of 2,3,4-tri- O-acetyl-α- D-xylopyranosyl chloride ( 1) with benzyl 2-acetamido-3,4-di- O-acetyl-2-deoxy-β- D-glucopyranoside ( 2), followed by O-deacetylation and catalytic hydrogenation. Condensation of 2 with 2,3,4-tri- O-chlorosulfonyl-β- D-xylopyranosyl chloride, followed by dechlorosulfonylation and acetylation, gave benzyl 2-acetamido-3,4-di- O-acetyl-2-deoxy-6- O-(2,3,4-tri- O-acetyl-α- D-xylopyranosyl)β- D-glucopyranoside in crystalline form. O-Deacetylation, followed by catalytic hydrogenation, gave 2-acetamido-2-deoxy-6- O-α- D-xylopyranosyl-α- D-glucopyranose in crystalline form.
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