ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The mass spectral fragmeutations of 13-ketosparteine, 13-hydroxysparteine, 13-epihydroxysparteine, 13-ketolupanine, 13-keto-α-isolupanine, 13-hydroxylupanine, 13-hydroxy-α-isolupanine, 13-epihydroxylupanine and 13-epihydroxy-α-isolupanine are reinvestigated and discussed. Fragmentation pathways, elucidation of which was assisted by accurate mass measuiements and metastable transitions, are proposed. The fragmentation assignments are not consistent with those previously reported in the literature. Many fragment species of the same m/z (low-resolution spectra) are composed of two fragment ions of different elemental compositions (high-resolution spectra). The obtained data create a safe basis for distinguishing structural and stereoisomers.
Additional Material:
4 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210231005
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