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Mass spectroscopy of natural products. V—Mass spectroscopic studies of ring a substituted allobetulane derivatives

✍ Scribed by J. Schmidt; S. Huneck

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
670 KB
Volume
14
Category
Article
ISSN
1076-5174

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✦ Synopsis

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.

📜 SIMILAR VOLUMES

Mass spectrometry of natural products: V
Mass spectrometry of natural products: VIII—Mass spectrometric studies of ring a saturated gibberellins
✍ D. Voigt; G. Adam; P. Franke 📂 Article 📅 1980 🏛 John Wiley and Sons 🌐 English ⚖ 294 KB

## Abstract The fragmentation behaviour of gibberellin A~1~ methyl ester and gibberellin C methyl ester has been studied by means of positive and negative ion mass spectrometry, high resolution techniques and metastable ion transitions. The results obtained allow a mass spectrometric distinction to