The mass spectra of nine pyrrolizidine alkaloids retronecine, heliotridine, 7-angeloylretronecine, 7-angeloylheliotridine, echimidine, heliosupine, lasiocarpine, heliotrine and echinatinewere studied. Particularly the structures of the ions m/e 214,197 and 156 in the spectrum of heliotrine are discu
Mass spectrometry of some butyrophenones
β Scribed by A. Frigerio; C. Rovere
- Publisher
- John Wiley and Sons
- Year
- 1972
- Tongue
- English
- Weight
- 190 KB
- Volume
- 6
- Category
- Article
- ISSN
- 1076-5174
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## Abstract Bromophenyl azides provide the only exceptions to the observation that nitrogen (N~2~) is eliminated from the molecular ions. Splitting out of HCN, C~2~H~2~ and (in the case of acyl or oβnitroaryl azides) CO are important processes.
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