Chemistry of Natural Compounds

, Volume 18, Issue 4, pp 460–465 | Cite as

Gas-liquid chromatography-mass spectrometry of acetates of partially methylated methyl glycosides. VII. Tri- and tetramethylheptoses

  • T. I. Vakorina
  • Yu. N. El'kin
Article
  • 21 Downloads

Abstract

Nine tri- and five tetramethyl ethers have been obtained by the partial methylation of methyl α- and β-glucoheptopyranosides and methyl 2,3,4,6,7-penta-O-acetyl1-α- and-β-glucoheptopyranosides. The retention indices of both types of methyl ethers on the liquid phase NPGS have been measured and the main directions of the fragmentation of these compounds under electron impact have been determined. The laws of the mass spectra of the position isomers that have been found will permit their use in GLC-MS analysis for determining the structure of a polysaccharide by the methylation method.

Keywords

Retention Index Methyl Ether Monomethyl Ether Pyranose Ring Barium Oxide 

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1983

Authors and Affiliations

  • T. I. Vakorina
  • Yu. N. El'kin

There are no affiliations available

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