Jm. Vegaperez et al., MASS-SPECTRA OF N-ALKYL AND N,N-DIALKYLAMINOSUGAR DERIVATIVES - CHEMICAL EVIDENCE FOR THE DIFFERENT PATHWAYS OF FRAGMENTATION, Journal of mass spectrometry., 31(5), 1996, pp. 493-499
The electron impact ionization mass spectra of new alkyl (and phenyl)
4,6-O-benzylidene-2-amino-N-alkyl- and N,N-dialkyl-2-deoxy-D-hexopyran
osides and benzyl (and phenyl) 4,6-O-benzylidene-2,3-di-O-alkyl-D-hexo
pyranosides were examined. Three general pathways of fragmentation wer
e encountered. The competition the two most important pathways of frag
mentation ([M - R(1)O --> ](#) and H routes) depends primarily on the
nature of the aglycone and secondarily on the nature of nitrogen subst
ituents. In addition, relationships between the different peak intensi
ties in each pathways of fragmentation depend exclusively on the natur
e of nitrogen substituents. Definitive chemical evidence for different
pathways of fragmentation was found.