M. Satterfield et Js. Brodbelt, Structural characterization of flavonoid glycosides by collisionally activated dissociation of metal complexes, J AM SOC M, 12(5), 2001, pp. 537-549
Citations number
44
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY
Collisionally activated dissociation is used for structural characterizatio
n of a series of flavonoid glycosides. Dissociation of transition metal/fla
vonoid binary complexes of the type [M-II(L - (+))](+) and transition metal
/2,2'-bipyridine/flavonoid ternary complexes of the type [M-II(L - H+)bpy](
+) give fragmentation patterns that are complementary and more diagnostic t
han those of the protonated, deprotonated, or sodium-cationized flavonoids.
Analysis of fragmentation patterns of the [M-II(L - H+)bpy](+) complexes p
ermits determination of the disaccharide as a rutinose or neohesperidose an
d the relative placement of the disaccharide (i.e., 3 vs. 7 positions). (J
Am Soc Mass Spectrom 2001, 12, 537-549) (C) 2001 American Society for Mass
Spectrometry.