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Mass spectroscopy of natural products. V—Mass spectroscopic studies of ring a substituted allobetulane derivatives
Author(s) -
Schmidt J.,
Huneck S.
Publication year - 1979
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.1210141205
Subject(s) - substituent , ring (chemistry) , chemistry , mass spectrum , yield (engineering) , mass spectrometry , decomposition , spectroscopy , terpene , computational chemistry , stereochemistry , organic chemistry , physics , chromatography , thermodynamics , quantum mechanics
Abstract The mass spectrometric behaviour of ring A substituted allobetulane derivatives is discussed. The position and nature of a substituent both influence the mass spectral decomposition remarkably. In the case of the epimeric 1‐hydroxy‐ and acetoxy allobetulanes, the mass spectral differences are great enough to distinguish these from each other. The results should yield a general rationalization for other saturated triterpenes having the same A, B, C ring system.