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Solanum alkaloids. 132 —Electron impact mass spectrometry of solanidane N ‐oxides
Author(s) -
Quyen Le Thi,
Schmidt Jürgen,
Schreiber Klaus
Publication year - 1995
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/jms.1190300130
Subject(s) - chemistry , fragmentation (computing) , electron ionization , moiety , mass spectrum , mass spectrometry , ion , oxide , cleavage (geology) , medicinal chemistry , bond cleavage , analytical chemistry (journal) , stereochemistry , organic chemistry , chromatography , ionization , geotechnical engineering , fracture (geology) , computer science , engineering , catalysis , operating system
The electron impact mass spectra of nine solanidane N ‐oxides show, in addition to the known typical fragmentation pattern of the solanidane moiety, the fragment ions [M – C 5 H 9 ] + and [C 6 H 12 NO] + , due to thermal Cope syn ‐eliminations caused by the N ‐oxide function and subsequent cleavage of the bonds between C(22) and C(23) and between C(20) and C(22), respectively, in the so‐obtained cyclic N , N ‐dialkylhydroxylamines.