@article{article0eee27fb,
title   = {Polyclyclic guanidine alkaloids from the marine sponge crambe crambe and 'CA POT.++' Channel blocker activity of crambescidin 816},
author = {Berlinck, Roberto Gomes de Souza and Braekman, J C and Dalose, D and Bruno, I and Riccio, R and Ferri, Sylvio and Spampinato, S and Speroni, E},
year = {1993},
journal   = {Journal of Natural Products}
}