Carbon-13 Nuclear Magnetic Resonance Spectral Assignments for Pyrrolizidine Alkaloids
β Scribed by Mody, Naresh V.; Sawhney, Rajinder S.; Pelletier, S. William
- Book ID
- 126850041
- Publisher
- American Chemical Society
- Year
- 1979
- Tongue
- English
- Weight
- 287 KB
- Volume
- 42
- Category
- Article
- ISSN
- 0163-3864
No coin nor oath required. For personal study only.
π SIMILAR VOLUMES
## Abstract Carbonβ13 chemical shift assignments have been obtained for the naturally occurring __Cephalotaxus__ alkaloids, cephalotaxine, acetylcephalotaxine, harringtonine, isoharringtonine, drupacine and cephalotaxinone.
## Abstract The ^13^C NMR spectra were determined and signals assigned to the various carbons of the alkamines veracevine, germine and zygacine derived from steroidal alkaloids of the ceveratrum class. Assignment of signals was aided by analysis of the partially relaxed spectrum of cervagenine 9,12
A I3C NMR method has been developed for obtaining simultaneously structural and quantitative information on mixtures of pyrrolizidine alkaloids from Senecio vulgaris L. (Compositae). The samples contained seneciphylline, senecionine, retrorsine and the corresponding E geometrical isomers, spartioidi