Electrospray mass spectrometric decomposition of some glucuronic acid-containing flavonoid diglycosides.
Phytochem Anal
; 14(3): 170-5, 2003.
Article
em En
| MEDLINE
| ID: mdl-12793465
ABSTRACT
Mass spectrometric fragmentation patterns of herbacetin 3-O-glucopyranoside-8-O-glucuronopyranoside (1), gossypetin 3-O-glucopyranoside-8-O-glucuronopyranoside (2) and takakin 7-O-glucopyranoside-8-O-glucuronopyranoside (3) were elucidated from mass spectra obtained with electrospray ionisation. The usefulness of the fragmentation patterns observed in the positive and negative mode for structural elucidation of the studied compounds is discussed. The fragmentation of 3 was substantially different from 1 and 2, especially in the negative mode. In order to explain these differences, theoretical calculations were performed.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Ácido Glucurônico
/
Espectrometria de Massas por Ionização por Electrospray
/
Glicosídeos
Idioma:
En
Revista:
Phytochem Anal
Ano de publicação:
2003
Tipo de documento:
Article