Treatment of benzyl O-/?-n-galactopyranosyl-( 1+3)-2-acetamido-2-deoxy-4,6-O-isopropylidene-j3-D-glucopyranoside with tert-butylchlorodiphenylsiiane afforded the 6'-0-tert-butyldiphenylsilyl ether, which was converted into the 3',4'-0-isopropylidene derivative. Methylation and subsequent removal of
✦ LIBER ✦
Behavior of the 2-acetamido-2-deoxy-α-d-glucopyranosyl residue during sequential hydrazinolysis, N-reacetylation, reduction, and methylation of glycoasparagines
✍ Scribed by Jean-Claude Michalski; Jasna Peter-Katalinic; Heinz Egge; José Paz-Parente; Jean Montreuil; Gérard Strecker
- Publisher
- Elsevier Science
- Year
- 1984
- Tongue
- English
- Weight
- 637 KB
- Volume
- 134
- Category
- Article
- ISSN
- 0008-6215
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✦ Synopsis
The products from the reaction were partly separated, and gas-liquid chromatographymass spectrometry and fast-atom-bombardment mass spectrometry indicated the presence of 8 by-products in addition to 2-acetamido-2-deoxyglucitol derivatives. It is postulated that these by-products are formed by a series of kinetically competitive processes starting from the key intermediate, 2-acetamido-2-deoxy-D-glucose hydrazone.
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Arun K. Sarkar; Rakesh K. Jain; Khushi L. Matta
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1990
🏛
Elsevier Science
🌐
English
⚖ 1002 KB