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Dimethylthexylsilyl 2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside, dimethylthexylsilyl 3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside, and dimethylthexylsilyl 2-O-(benzylsulfonyl)-3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside: synthesis of authentic samples.

ABSTRACT: Dimethylthexylsilyl 2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside was prepared by reduction of the corresponding 4,6-O-(4-methoxybenzylidene) acetal with sodium cyanoborohydride and trifluoroacetic acid. This alcohol was coupled to 2-O-benzoyl-3,4,6-tri-O-benzyl-alpha-D-glucopyranosyl trichloroacetimidate to give a beta-glucoside that was converted to dimethylthexylsilyl 3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside by saponification, Dess-Martin oxidation, and sodium borohydride reduction. Sulfonylation then gave dimethylthexylsilyl 2-O-(benzylsulfonyl)-3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside.

SUBMITTER: Crich D 

PROVIDER: S-EPMC2669226 | biostudies-literature | 2009 Jan

REPOSITORIES: biostudies-literature

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Dimethylthexylsilyl 2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside, dimethylthexylsilyl 3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside, and dimethylthexylsilyl 2-O-(benzylsulfonyl)-3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside: synthesis of authentic samples.

Crich David D   Li Ming M   Jayalath Prasanna P  

Carbohydrate research 20081014 1

Dimethylthexylsilyl 2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenzyl)-beta-D-glucopyranoside was prepared by reduction of the corresponding 4,6-O-(4-methoxybenzylidene) acetal with sodium cyanoborohydride and trifluoroacetic acid. This alcohol was coupled to 2-O-benzoyl-3,4,6-tri-O-benzyl-alpha-D-glucopyranosyl trichloroacetimidate to give a beta-glucoside that was converted to dimethylthexylsilyl 3,4,6-tri-O-benzyl-beta-D-mannopyranosyl-(1-->4)-2-acetamido-3-O-allyl-2-deoxy-6-O-(4-methoxybenz  ...[more]

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