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Characterization of stereoisomeric furanosidic derivatives by direct chemical ionization mass spectrometry and liquid secondary ion mass spectrometry with tandem mass spectrometry. (Part II)

✍ Scribed by C. Borges; M. A. Almoster Ferreira; H. Van den Heuvel; M. Claeys

Publisher: John Wiley and Sons
Year: 1997
Tongue: English
Weight: 186 KB
Volume: 11
Category: Article
ISSN: 0951-4198
DOI: 10.1002/(sici)1097-0231(199707)11:11<1171::aid-rcm913>3.0.co;2-3

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✦ Synopsis

The present study deals with the mass spectrometric characterization of furanosidic compounds containing a 1,2-O-isopropylidene group using different mass spectrometric techniques: chemical ionization mass spectrometry and liquid secondary ion mass spectrometry together with metastable ion analysis and collision-induced dissociation. Common fragmentation differences relate to the extent of the loss of water and the elimination of acetone. It is also shown that the introduction of a stable charge centre (Li + ) in the molecules is critical for observing a rearrangement involving hydrogen transfer in one of the two stereoisomeric pairs examined.

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