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The mass spectra of some triterpenoid dehydration products
Author(s) -
Elgamal M. H. A.,
Fayez M. B. E.,
Kemp T. R.
Publication year - 1969
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.1210020204
Subject(s) - dehydration , mass spectrum , fragmentation (computing) , chemistry , solvolysis , isopropyl , chromophore , ring (chemistry) , stereochemistry , medicinal chemistry , organic chemistry , mass spectrometry , chromatography , hydrolysis , biochemistry , computer science , operating system
Abstract The mass spectra of ten dehydration and solvolysis products obtained from β‐amyrin and glycyrrhetic acid were studied. With the exception of those resulting from ‘backbone’ rearrangement, they exhibited conventional fragmentation due to the ring C chromophore, like the parent alcohols. Only those products with a contracted ring A suffered loss of an isopropyl radical. In the latter type, special fragmentation features were exhibited by the isopropylcyclopentene and by the isopropylidene products. These differences enabled the assignment of probable structures for two unknown derivatives.