ELECTRON-IMPACT IONIZATION AND FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY OF SOME 3,3-DIMETHYL-1-(ISOXAZOL-3-YL)TRIAZENES, A NEW CLASS OF POTENTIAL ANTICANCER AGENTS
L. Orsatti et al., ELECTRON-IMPACT IONIZATION AND FAST-ATOM-BOMBARDMENT MASS-SPECTROMETRY OF SOME 3,3-DIMETHYL-1-(ISOXAZOL-3-YL)TRIAZENES, A NEW CLASS OF POTENTIAL ANTICANCER AGENTS, Journal of mass spectrometry., 30(11), 1995, pp. 1567-1573
A series of 3,3-dimethyl-1-(isoxazol-3-yl)triazenes, potential antican
cer agents, were studied by electron impact (EI) ionization and fast a
tom bombardment mass spectrometry. Their behaviour was compared with t
hat of dacarbazine, imethyl-1-triazenyl)-(1H)-imidazole-4-carboxamide,
which is employed in the treatment of several neoplastic conditions.
An interesting EI-generated decomposition pathway was observed, consis
ting in the primary formation of [NH2CH3](+) cations, involved in the
metabolic pathway of triazenes, as the alkylating agent responsible fo
r the anticancer properties of the drug. A higher thermodynamic stabil
ity of the examined compounds than decarbazine was observed, which rea
sonably reflects the higher chemical stability.