Elimination of Oxidative Degradation during the per-O-Methylation of Carbohydrates
โ Scribed by Ciucanu, Ionel; Costello, Catherine E.
- Book ID
- 115513983
- Publisher
- American Chemical Society
- Year
- 2003
- Tongue
- English
- Weight
- 79 KB
- Volume
- 125
- Category
- Article
- ISSN
- 0002-7863
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๐ SIMILAR VOLUMES
The action of various strong bases during the methylation of uranic acids has been studied in order to establish conditions that cause a minimum of degradation. The system methyl iodode-sodium hydroxidemethyl sulphoxide gave good yields of methytated uranic acids if the methyl iodide was added befor
Oxidation of various carbohydrates to ammonium formate was investigated in the presence of hydrogen peroxide and ammonium hydroxide. Most of the examined carbohydrates except nonreducing sugars were efficiently converted into ammonium formate under environment friendly and mild conditions in aqueous
Glycosyl-residue elimination occurred in per-O-alkylated oligosaccharide-alditols during chemical ionization-mass spectrometry. This elimination produced fragment ions equivalent in mass IO an (M + 1) ion of a per-0-alkylated oligosaccharide-alditol containing one less glycosyl residue than the pare