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Mass spectral studies on steroidal compounds—II: 7a‐aza compounds in the cholestane series (ring Bε‐lactams)
Author(s) -
Ahmad M. S.,
Mushfiq M.
Publication year - 1972
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.1210061007
Subject(s) - cholestane , fragmentation (computing) , mass spectrum , chemistry , metastability , ring (chemistry) , ion , fragment (logic) , stereochemistry , spectral line , organic chemistry , mathematics , physics , biology , astronomy , ecology , algorithm
The mass spectra of four structurally related 7a‐aza compounds in the cholestane series have been examined. These spectra are conspicuous by the presence of a fragment ion peak at m / e 222 (C 15 H 28 N). which can be of diagnostic value in characterisation of such ε‐lactams. The fragmentation pathways are supported by accurate mass measurement of the salient fragment ions and in some cases by appropriate metastable peaks.