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rdf:type | |
lifeskim:mentions | |
pubmed:dateCreated |
1977-4-28
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pubmed:abstractText |
Condensation of 4,6-di-O-acetyl-2,3-O-carbonyl-alpha-D-mannopyranosyl bromide with 2-amino-2-N,3-O-carbonyl-5.6-O-isopropylidene-D-glucose diethyl acetal gave, unexpectedly, 2-amino-2-N,3-O-carbonyl-2-deoxy-4-O-(4,6-di-O-acetyl-2,3-O-carbonyl-alpha-D-mannopyranosyl)-5,6-O-isopropylidene-D-glucose diethyl acetal, futher transformed, by de-esterification followed by acetylation, into the previously known 2-amino-2-N,3-O-carbonyl-2-deoxy-5,6-O-isopropylidene-4-O-alpha-D-mannopyranosyl-D-glucose diethyl acetal and its tetra-O-acetyl derivative. Benzyl 2-acetamido-3,6-di-O-benzyl-2-deoxy-beta-D-glucopyranoside was condensed with 2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-glucopyranosyl bromide to give benzyl 2-acetamido-4-O-(2-O-acetyl-3,4,6-tri-O-benzyl-beta-D-glucopyranosyl)-3,6-di-O-benzyl-2-deoxy-beta-D-glucopyranoside. Removal of the 2-O-acetyl group, followed by oxidation with acetic anhydridedimethyl sulfoxide, gave a beta-D-arabino-hexosid-2-ulose (25). After reduction with sodium borohydride, removal of the benzyl groups gave crystalline 2-acetamido-2-deoxy-4-O-beta-D-mannopyranosyl-D-glucose (27). The anomeric configuration of the glycosidic linkage was ascertained by comparison with the alpha-D-linked disaccharide.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical |
http://linkedlifedata.com/resource/pubmed/chemical/Disaccharides,
http://linkedlifedata.com/resource/pubmed/chemical/Glucose,
http://linkedlifedata.com/resource/pubmed/chemical/Glucosides,
http://linkedlifedata.com/resource/pubmed/chemical/Glycosides,
http://linkedlifedata.com/resource/pubmed/chemical/Hexosamines,
http://linkedlifedata.com/resource/pubmed/chemical/Mannose
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pubmed:status |
MEDLINE
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pubmed:month |
Dec
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pubmed:issn |
0008-6215
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
52
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
115-27
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pubmed:dateRevised |
2006-11-15
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pubmed:meshHeading |
pubmed-meshheading:1016982-Disaccharides,
pubmed-meshheading:1016982-Glucose,
pubmed-meshheading:1016982-Glucosides,
pubmed-meshheading:1016982-Glycosides,
pubmed-meshheading:1016982-Hexosamines,
pubmed-meshheading:1016982-Magnetic Resonance Spectroscopy,
pubmed-meshheading:1016982-Mannose,
pubmed-meshheading:1016982-Methods,
pubmed-meshheading:1016982-Optical Rotation
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pubmed:year |
1976
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pubmed:articleTitle |
The synthesis of 2-acetamido-2-deoxy-4-O-beta-D-mannopyranosyl-D-glucose.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.
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