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.
Pronuciferine N-oxide, a proaporphine N-oxide alkaloid from Berberis coletioides.
Compound 1 is the first naturally occurring proaporphine N-methyl-N-oxide alkaloid with an N-oxide functionality, and was determined by spectroscopic evidence.
Defensive Sesquiterpenes from Senecio candidans and S. magellanicus, and Their StructureActivity Relationships
Eleven eremophilanolides, 1–3 and 6–13, and two eRemophilanes, 24 and 25, were isolated from Senecio candidans and S. magellanicus from the Magallanes Region (Chile) and their possible plant defensive role was tested against herbivorous insects and plants.
A new bisbenzyltetrahydroisoquinoline alkaloid from Berberis tabiensis (Berberidaceae)
Antibacterial Activity of Alkaloid Fractions from Berberis microphylla G. Forst and Study of Synergism with Ampicillin and Cephalothin
The present study evaluated the antibacterial and synergistic activity of alkaloid extracts of B. microphylla leaves, stems and roots used either individually or in combination with antibiotics against Gram-positive and Gram-negative bacteria.
Biological activity of some Patagonian plants.
Bioactive Furanoeremophilanes from Senecio otites Kunze ex DC.
- Dulce M. Domínguez, M. Reina, L. Villarroel, V. Fajardo, A. González-Coloma
- BiologyZeitschrift für Naturforschung C - A Journal of…
- 1 December 2008
These compounds proved to be effective aphid antifeedants against Myzus persicae and Rhopalosiphum padi and had postingestive negative effects on Spodoptera littoralis larvae, and did not have any phytotoxic effects on Lactuca sativa.
(±)-Nuevamine, an isoindoloisoquinoline alkaloid, and (±)-lennoxamine, an isoindolobenzazepine
Chilenine: An isoindolobenzazepine alkaloid