[14C]Senecionine and [14C]isosenecionine from the pyrrolizidine alkaloid retrorsine
β Scribed by A. Robin Mattocks
- Publisher
- John Wiley and Sons
- Year
- 1983
- Tongue
- French
- Weight
- 419 KB
- Volume
- 20
- Category
- Article
- ISSN
- 0022-2135
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β¦ Synopsis
Abstract
Retrorsine (1) has been oxidized to a mixture of two epimeric cyclic keto esters (2) which, [^14^C]methylmagnesium iodide gave [18β^14^C]senecionine (3a) and [18β^14^C] isosenecionine (3d).
π SIMILAR VOLUMES
## Abstract Two approaches towards the synthesis of 3βchloroβ4βaminoβ1,8βnaphthalic anhydrideβ[^14^C], which served as the common intermediate in the preparation of the two title compounds, are described. Although nucleophilic incorporation of the label via KCN was superior to an electrophilic sequ
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
A method for the determination of the pyrrolizidine alkaloids from Seneciojucobueu (Compositae) by 'H and I3C NMR is presented. 'H NMR is a reliable method for the determination of the total alkaloid level. I3C NMR appears to be a suitable method for the determination of the individual alkaloids. Th