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Demonstration of long‐chain n‐ alkyl caffeates and Δ 7 ‐steryl glucosides in the bark of Acacia species by gas chromatography–mass spectrometry
Author(s) -
Freire Carmen S. R.,
Silvestre Armando J. D.,
Neto Carlos Pascoal
Publication year - 2007
Publication title -
phytochemical analysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 72
eISSN - 1099-1565
pISSN - 0958-0344
DOI - 10.1002/pca.964
Subject(s) - chemistry , alkyl , dichloromethane , bark (sound) , chromatography , homologous series , gas chromatography–mass spectrometry , mass spectrometry , glucoside , gas chromatography , organic chemistry , trimethylsilyl , acacia , botany , solvent , medicine , physics , alternative medicine , pathology , acoustics , biology
Abstract The GC‐MS identification of several abundant long‐chain aliphatic n ‐alkyl caffeates, together with other p‐ hydroxycinnamic acid esters, in the dichloromethane extracts of the bark of Acacia dealbata and A. melanoxylon , is reported. In addition, the unambiguous differentiation between two Δ 7 ‐steryl glucosides (namely, spinasteryl glucoside and dihydrospinasteryl glucosides) and the homologous Δ 5 ‐steryl glucosides was achieved based on the EI‐MS fragmentation features of their trimethylsilyl derivatives. Copyright © 2007 John Wiley & Sons, Ltd.