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Multiple losses of neutral C 14 H 14 in the tandem mass spectrometry of several perbenzyl ether intermediates in the synthesis of green tea constituents
Author(s) -
Lesimple Alain,
Di Falco Marcos,
Richard Yannick,
Lesimple Souad,
Wang Zhigang,
Chan Tak Hang,
Mamer Orval A.
Publication year - 2005
Publication title -
rapid communications in mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.528
H-Index - 136
eISSN - 1097-0231
pISSN - 0951-4198
DOI - 10.1002/rcm.2186
Subject(s) - chemistry , tandem , tandem mass spectrometry , mass spectrometry , ether , chromatography , organic chemistry , materials science , composite material
Abstract Electrospray and matrix‐assisted laser desorption/ionization (MALDI) tandem mass spectrometry (MS/MS) experiments were used to investigate an unusual fragmentation in collision‐induced dissociation (CID) of sodiated and potassiated perbenzyl ether intermediates obtained in the total synthesis of gallate ester constituents of green tea. Prominent fragments correspond to multiple sequential losses of neutral C 14 H 14 that were not observed in the protonated and ammoniated species, that instead present fragment ion series in which members are separated by C 7 H 6 . High‐resolution MALDI quadrupole time‐of‐flight (Q‐TOF) and electrospray‐Fourier transform mass spectrometry (FTMS) were used to confirm elemental compositions of these and related ions. Copyright © 2005 John Wiley & Sons, Ltd.