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Gas phase reactivity of isomeric arylglycosides towards amines. A chemical ionization mass spectrometry and tandem mass spectrometry study.

作者信息

Giorgi Gianluca, Salvini Laura, Ponticelli Fabio

机构信息

Dipartimento di Chimica and Centro Interdipartimentale di Analisi e Determinazioni Strutturali, Università di Siena, Siena, Italy.

出版信息

J Am Soc Mass Spectrom. 2004 Feb;15(2):244-52. doi: 10.1016/j.jasms.2003.10.014.

DOI:10.1016/j.jasms.2003.10.014
PMID:14766291
Abstract

Chemical ionization mass spectrometry (MS) and tandem mass spectrometry (MS/MS) experiments have been performed for the structural characterization and isomeric differentiation of two series of C- and O-linked arylglycosides with potential antioxidant activity. Different amines have been used for producing gas phase chemical ionization. Depending on their proton affinity and steric hindrance, adduct ions with different stability are formed. The most stable adducts are produced by ethylamine and they have been extensively structurally characterized by experimental and theoretical approaches. Energy resolved chemical ionization tandem mass spectrometric experiments have allowed unambiguous characterization and differentiation of both the anomers differing at the configuration of the glycosidic C(1) atom, and regio- and structural isomers at extremely low concentrations, typical of mass spectrometry. This study has shown that amine chemical ionization mass spectrometry and MS/MS are powerful and versatile tools for the structural characterization of arylglycosides.

摘要

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2
Probing isomeric differences of phosphorylated carbohydrates through the use of ion/molecule reactions and FT-ICR MS.通过离子/分子反应和傅里叶变换离子回旋共振质谱法探究磷酸化碳水化合物的异构体差异。
J Am Soc Mass Spectrom. 2003 Apr;14(4):323-31. doi: 10.1016/S1044-0305(03)00067-9.
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Incremented alkyl derivatives enhance collision induced glycosidic bond cleavage in mass spectrometry of disaccharides.
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