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Mass spectrometry of bis‐quinolizidine alkaloids: Lactams of sparteine and α‐isosparteine
Author(s) -
MajchrzakKuczyńska U.,
Wiewiórowski M.,
Wyrzykiewicz E.
Publication year - 1984
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210191203
Subject(s) - sparteine , quinolizidine , fragmentation (computing) , mass spectrum , chemistry , mass spectrometry , metastability , stereochemistry , high resolution , ion , mass , spectral line , resolution (logic) , crystallography , alkaloid , physics , organic chemistry , chromatography , biology , remote sensing , computer science , geology , ecology , astronomy , artificial intelligence
The mass spectral fragmentations of 2‐oxosparteine (lupanine), 2‐oxo‐α‐isosparteine (α‐isolupanine), 15‐oxosparteine, 17‐oxosparteine and 10‐oxosparteine (aphylline) are reinvestigated and discussed. Fragmentation pathways, elucidation of which were assisted by accurate mass measurements 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 or three fragment ions of different elemental compositions (high‐resolution spectra). The obtained data create a safe basis for distinguishing structural and stero isomers.