Open AccessMass Spectra Analyses of Amides and Amide Dimers of Steviol, Isosteviol, and Steviolbioside
Author(s) -
Lin-Wen Lee,
TzongHuei Lee,
ChingTung Lin,
Tiffany Chen,
PenYuan Lin
Publication year - 2012
Publication title -
international journal of spectroscopy
Language(s) - English
Resource type - Journals
eISSN - 1687-9457
pISSN - 1687-9449
DOI - 10.1155/2012/894891
Subject(s) - mass spectrum , fast atom bombardment , dimer , amide , chemistry , fragmentation (computing) , ion , spectral line , mass spectrometry , steviol , stevioside , stereochemistry , analytical chemistry (journal) , organic chemistry , chromatography , medicine , physics , alternative medicine , pathology , astronomy , computer science , operating system
The mass spectra of a series of stevioside analogues including the amide and dimer compounds of steviol, isosteviol, and steviolbioside were examined. Positive ion mass spectral fragmentation of new steviol, isosteviol, and steviolbioside amides and the amide dimers are reported and discussed. The techniques included their synthesis procedures, fast-atom bombardment (FAB), and LC/MS/MS mass spectra. Intense [M+H]+ and [M+Na]+ ion peaks were observed on the FAB and ESI spectra. LC/MS/MS also yielded ES+ and ES− ion peaks that fairly agreed with the results of the FAB and ESI studies. Mass spectral analysis of compounds 4p-q, 5a-g, 6, and 7 revealed the different cleavage pathway patterns that can help in identifying the structures of steviolbioside and its amide derivatives
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