Title
Structure elucidation of annoheptocins, two new heptahydroxylated C-37 acetogenins by high-energy collision-induced dissociation tandem mass spectrometry Structure elucidation of annoheptocins, two new heptahydroxylated C-37 acetogenins by high-energy collision-induced dissociation tandem mass spectrometry
Author
Publication type
article
Publication
London ,
Subject
Chemistry
Source (journal)
Rapid communications in mass spectrometry. - London
Volume/pages
12(1998) :23 , p. 1936-1944
ISSN
0951-4198
ISI
000077208400015
Carrier
E
Target language
English (eng)
Affiliation
University of Antwerp
Abstract
Collision-induced dissociation (CID) of lithiated molecules generated by liquid SIMS (LSIMS) from two new natural compounds, annoheptocin A and B, led to their structural elucidation. Mass spectrometry (MS) and tandem mass spectrometry (MS/MS) investigations of their acetonide derivatives displayed obvious differences of reactivity of the lithiated dioxane and dioxolane rings towards CID, The 1,3-dioxane (six-membered) ring could be the target of hydrogen rearrangement processes, leading to the formation of a tetrahydrofuran ring through the loss of a molecule of acetone. (C) 1998 John Wiley & Sons, Ltd.
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