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Features of the splitting out of a methyl radical from lycoctonine alkaloids under electron impact
- Source :
- Chemistry of Natural Compounds. 21:492-502
- Publication Year :
- 1985
- Publisher :
- Springer Science and Business Media LLC, 1985.
-
Abstract
- The mass spectra of 53 alkaloids and their derivatives are considered. It is known that the presence of a C6(OCH3)-C7(OH)-C8 (OH) grouping in C19-diterpene alkaloids leads to a high intensity of the (M - 15)+ ions at the expense of the C6(OCH3) group and considerably suppresses the competing processes of forming the [M - OH (OCH3)]+ ions in the alkaloids and the (M - 56)+ ions in the anhydroxy bases. When the above-mentioned grouping is absent, the (M - 15)+ ions are formed mainly by the splitting out of a ĊH3 from a N-ethyl group.
Details
- ISSN :
- 15738388 and 00093130
- Volume :
- 21
- Database :
- OpenAIRE
- Journal :
- Chemistry of Natural Compounds
- Accession number :
- edsair.doi...........76055d2173c73ff0ebb55ff2eb30100c