The mass spectra of permethylated oligosaccharides
β Scribed by J. Moor; E. S. Waight
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 673 KB
- Volume
- 2
- Category
- Article
- ISSN
- 1076-5174
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β¦ Synopsis
The electron impact mass spectra of permethyl ethers of twenty-five highly purified oligosaccharides, containing first, aldohexose units only and second. at least one fructose unit, have been determined. I t is concluded that spectra of these derivatives can yield considerable structural information, especially in relation to the detection of fructose units, the pyranose/furanose ratio and the position of the glycosidic linkage, and are to be preferred from this point of view to the mass spectra of trimethylsilyl ethers.
π SIMILAR VOLUMES
Mass spectra of ten %substituted permethylated trisilanes which include compounds with halo, phenyl and hydrido substituents are reported. Labelling with a C03 group disclosed that a terminal silicon is more favourable as a charge position for the trisilyl cation than the middle atom and that a-and
The electron impact mass spectra (EIMS) of 19 permethylated hexopyranosyl-hexitols, monodeuterated at C'-1, four partially trideuteriomethylated analogues, and some other permethylated hexopyranosides have been investigated. In the formation of the A, ion from the hexopyranosyl-hexitols, only a mino