Methyl ot-isomaltoside and methyl a-isomaltotrioside analogues specifically deoxygenated at position C-2 of various glucopyranosyl units were synthesized by condensation of either 6-0acetyl-3-O-benzoyl-4-O-benzyl-1-O-tert-butyldimethylsilyl-2-deoxy-fl-D-arabino-hexopyranose (trimethylsilyl triflate
Syntheses of specifically deoxygenated methyl α-isomaltotriosides
✍ Scribed by Eva Petráková; Pavol Kováč; Cornelis P.J. Glaudemans
- Book ID
- 108309204
- Publisher
- Elsevier Science
- Year
- 1992
- Tongue
- English
- Weight
- 890 KB
- Volume
- 233
- Category
- Article
- ISSN
- 0008-6215
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📜 SIMILAR VOLUMES
Methyl a-isomaltoside and methyl a-isomaltotrioside specifically deoxygenated at position C-3 of various glucopyranosyl units were synthesized by condensation of either 1,6-di-O-acetyl-2,4-di-O-benzyl-3-deoxy-adg-D-ribo-hexopyranose (7) or 1,6-di-O-acetyl-2,3,4-tri-O-benzyl-a,~-D-glucopyranose [medi
Other instances of anomalous Zempl6n deacylation have been described [5][6][7]. The common feature so far is that, following Zempl6n deacylation of a protected saccharide, an acyl group at position 2 of that saccharidic unit was retained that bore a benzyl, allyl, or glycosyl group at position 3. W
Treatment of methyl Ot-D-perosaminide (1) with y-butyrolactone gave the 2'-deoxy analogue of methyl 4,6-dideoxy-4-(3-deoxy-L-glycero-tetronamido)-a-D-mannopyranoside (13), the methyl a-glycoside of the intracatenary monosaccharide repeating unit of the O-polysaccharide of Vibrio cholerae O:1. The an