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Analysis of tetrabenzyl N-giucosidic, N-mannosidic and N-galactosidic Isomers using fast atom bombardment/mass-analysed ion kinetic energy spectrometry

✍ Scribed by Lin Yan; Jiarou Peng; Xianyun Jiao; Mengshen Cai

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 362 KB
Volume: 27
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210270906

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✦ Synopsis

A series of new synthetic tetrabenzyl N-glucosidic, N-mannosidic and N-galactosidic isomers were investigated by fast atom bombardment (FAB)/mass-analysed ion kinetic energy (MIKE) spectrometry. The [ M + H] + ions were obtained with high abundance in the FAB spectra when using 3-nitrobenzyl alcohol as the matrix. The FABWIKE spectra provide characteristic daughter ions fragmented from selected molecular parent ions, allowing these isomers to be differentiated. In addition, an interesting rearrangement was found from the MIKE spectra, indicating that tbe benzyl (Bzl) group on the sugar ring is rearranged on to the N atom of the base (R) group to form [R + Bzl+ HI+ and [R + 2BzlI' ions.

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