Field desorption mass spectra of flavonoid acylglycosides. I. Natural acetyl derivatives
β Scribed by G. G. Zapesochnaya; A. N. Stepanov; A. A. Perov
- Book ID
- 104817859
- Publisher
- Springer
- Year
- 1984
- Tongue
- English
- Weight
- 576 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0009-3130
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Electron impact mass spectra of the trimethylsilyl derivatives of a series of flavonoid aglycones and chalcones are reported. The spectra show prominent ions arising from fragmentation of the trimethylsilyl (TMS) groups. Interactions between adjacent TMS groups, and between TMS groups in the 3-or 5-
Field desorption mass spectra have been recorded of n-dotriacontane, n-tetracosanoic acid and hexadecyl hexadecanoate as representatives of long straight-chain alcohols, acids and esters respectively. Molecular or quasimolecular ions were formed almost exclusively with fragmentation at a low level.
Mass spectra of acetyl derivatives of a series of homogeneous cerebrosides have been recorded. The compounds studied had a o-galactopyranose in fl-glycosidic linkage to different ceramides (containing dihydroxy or trihydroxy long-chain base and normal or hydroxy fatty acid). The composition of the m