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
Some observations of the mass-spectrometry of bizbenzylisoquinoline alkaloids.
β Scribed by J. Baldas; Q.N. Porter; I.R.C. Bick; M.J. Vernengo
- Publisher
- Elsevier Science
- Year
- 1966
- Tongue
- French
- Weight
- 403 KB
- Volume
- 7
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
The alkaloid thalmine, first isolated from the Soviet Asian plant l'halktrum ring L (1). has recently been shown to have the novel type of biscoclaurfnc structure (I) with a 5.7' ether link between the two isoquinoline residues (2).
## Ah&net -Based on mass sptrometry, alkaloids of the rhoeadine type may be divided into acetals and scmiacetals. Each ties of compounds exhibits its own structurally &z&eristic fragmentation patt-THE alkaloids of rhoeadine type represent a new group of natural bases isolated from plants of Papave