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Mass spectrometric study of structure and stereochemistry of some stereoisomeric furanosidic derivatives
Author(s) -
Borges C.,
Ferreira M. A. Almoster,
Jennings K. R.
Publication year - 1992
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210271022
Subject(s) - fragmentation (computing) , epimer , kinetic energy , metastability , chemistry , mass spectrum , ion , mass spectrometry , collision induced dissociation , decomposition , computational chemistry , spectral line , stereochemistry , analytical chemistry (journal) , organic chemistry , chromatography , tandem mass spectrometry , physics , quantum mechanics , computer science , operating system , astronomy
Abstract A mass spectrometric study of eight new carbohydrate derivatives has been carried out to determine the influence of structure on the fragmentation mechanisms of stereoisomers. Results indicate that the relative intensities of peaks due to fragment ions of each pair of isomers are sometimes very different, especially those observed in the collision‐induced decomposition mass spectra of [MH] + ions. Metastable decompositions related to identical fragmentation processes of two isomers release different amounts of kinetic energy, however. It is usually observed that the kinetic energy released is larger for the S‐configuration than for the R‐configuration of the two epimers of a particular species.