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Defensive chemistry of Senecio miser.
Eremophilanolides 1 and 2 and alkaloids 4 and 5 were found to be strong insect antifeedants, further supporting a proposed defensive role for these classes of compounds.
Diterpenoids from Calceolaria thyrsiflora
Diterpenoid alkaloids from Delphinium gracile
- M. Reina, R. Mancha, A. González-Coloma, M. Bailén, M. L. Rodríguez, R. Martínez-Díaz
- ChemistryNatural product research
- 12 September 2007
Two highly oxygenated hetisine-type diterpenoid alkaloids, delphigraciline and 14-hydroxyhetisinone N-oxide, were isolated from a neutral extract of Delphinium gracile and their structures were elucidated on the basis of spectroscopic data.