Electron ionization mass spectrometric study of substituted alloxazine-5-oxides and iso-alloxazine-5-oxide.
Rapid Commun Mass Spectrom
; 23(5): 619-28, 2009 Mar.
Article
em En
| MEDLINE
| ID: mdl-19165754
ABSTRACT
The fragmentation pathways in electron ionization (EI) mass spectra of a series of new N(5)-oxides of alloxazines and iso-alloxazine are presented, and compared with those of substituted alloxazines and iso-alloxazine. The EI mass spectra of these compounds showed characteristic fragmentation pathways A, B and C, started by the ejection of atomic oxygen, a HNCO molecule and an OH(*) radical, respectively. On the basis of B/E and B(2)/E spectra, the mechanism of elimination of the OH(*) radical is discussed. The influence of the methyl substituent in the benzene ring of alloxazine on the mass fragmentation pathways is described.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Óxidos
/
Espectrometria de Massas por Ionização por Electrospray
/
Flavinas
/
Antineoplásicos
Idioma:
En
Revista:
Rapid Commun Mass Spectrom
Ano de publicação:
2009
Tipo de documento:
Article