Amphitoxin, a new high molecular weight antifeedant pyridinium salt from the Caribbean sponge Amphimedon compressa.

@article{Albrizio1995AmphitoxinAN,
  title={Amphitoxin, a new high molecular weight antifeedant pyridinium salt from the Caribbean sponge Amphimedon compressa.},
  author={Stefania Albrizio and Patrizia Ciminiello and Ernesto Fattorusso and Silvana G Magno and Joseph R. Pawlik},
  journal={Journal of natural products},
  year={1995},
  volume={58 5},
  pages={647-52}
}
A new polymeric pyridinium alkaloid named amphitoxin [2] has been isolated from Amphimedon compressa, and its structure determined by spectroscopic analysis. In laboratory feeding experiments, crude extracts and purified amphitoxin [2] from A. compressa at lower than natural concentration levels effectively deterred feeding of a generalist predatory Caribbean reef fish, Thalassoma bifasciatum.