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Mass-spectral identification of various derivatives of 7-deoxy-d-glycero-d-galacto- and 7-deoxy-l-glycero-d-galacto-heptopyranose

✍ Scribed by Joseph H. Banoub; Paul Boullanger; Jocelyne Hellou; Gérard Descotes; Anthony K. Ziberna

Book ID
102994635
Publisher
Elsevier Science
Year
1988
Tongue
English
Weight
814 KB
Volume
176
Category
Article
ISSN
0008-6215

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✦ Synopsis

The analysis of a range of methyl ethers derived from methyl 7-deoxy-Dglycero-go-galacfo-heptopyranoside

(1) and methyl 7-deoxy-L-gfycero-pDgulucto-heptopyranoside

(2) is examined in relation to their retention times in opentubular gas-liquid chromatography, and to their electron-impact mass spectra and fragmentation patterns. In addition, the electron-impact and chemical-ionization mass spectra of the peracetylated and permethylated glycosides and alditol acetates of the novel 7-deoxyheptoses 1 and 2 are described. A fragmentation pattern for methyl 2,3,4,6-tetra-O-acetyl-7-deoxy-D-gZyce~o-~D-g~~~c~o-heptopyranoside was proposed, and verified by 0-(trideuterioacetyl)ation.

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