Mass spectroscopy of natural products. V—Mass spectroscopic studies of ring a substituted allobetulane derivatives
- 1 December 1979
- journal article
- research article
- Published by Wiley in Journal of Mass Spectrometry
- Vol. 14 (12) , 646-655
- https://doi.org/10.1002/oms.1210141205
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.Keywords
This publication has 21 references indexed in Scilit:
- ZUM MECHANISMUS MASSENSPEKTROMETRISCHER FRAGMENTIERUNGSREAKTIONEN BEI A/B‐CIS‐ VERKNüPFTEN 3α‐HYDROXYSTEROIDEN MIT UND OHNE 11‐KETOGRUPPEJournal of Mass Spectrometry, 1975
- Massenspektrometrie und ihre Anwendung auf strukturelle und stereochemische Probleme. CCXXVI. Wasserabspaltung durch Elektronenstoß von 3‐Hydroxy‐5β‐cholanenEuropean Journal of Inorganic Chemistry, 1973
- Mass Spectrometry in Structural and Stereochemical Problems. XCIII.1 Further Observations on the Importance of Interatomic Distance in the McLafferty Rearrangement. Synthesis and Fragmentation Behavior of Deuterium-Labeled 12-Keto Steroids2,3Journal of the American Chemical Society, 1966
- Photochemische Umsetzungen, IV; Triterpene, XII: Die Darstellung von 19β.28‐Epoxy‐1‐oxo‐2‐diazo‐18αH‐oleanan und dessen photochemische und thermische Umwandlung in A‐Nor‐VerbindungenEuropean Journal of Inorganic Chemistry, 1965
- Mass Spectrometry in Structural and Stereochemical Problems. LXV.1 Synthesis and Fragmentation Behavior of 15-Keto Steroids. The Importance of Interatomic Distance in the McLafferty Rearrangement2Journal of the American Chemical Society, 1965
- Mass Spectrometry in Structural and Stereochemical Problems. XLVIII.1 A Study of the Hydrogen Transfer Reactions Accompanying Fragmentation Processes of 1-Keto Steroids. Synthesis of Deuterated 5α-Androstan-1-ones2Journal of the American Chemical Society, 1964
- Mass Spectrometry in Structural and Stereochemical Problems. XXXII.1 Pentacyclic TriterpenesJournal of the American Chemical Society, 1963
- Studies in Mass Spectrometry. VII. Triterpenoids: Ifflaionic AcidAustralian Journal of Chemistry, 1963
- Mass Spectrometry in Structural and Stereochemical Problems. I. Steroid KetonesJournal of the American Chemical Society, 1962
- Confirmation of the Structure of Ketomanoyl Oxide.Acta Chemica Scandinavica, 1960