Kobayashi J, Ohizumi Y, Nakamura H, Hirata Y
Experientia. 1986 Oct 15;42(10):1176-7. doi: 10.1007/BF01941300.
A novel bromine-containing pyrrole compound, hymenidin, has been isolated from the Okinawan marine sponge Hymeniacidon sp. as a potent antagonist of serotonergic receptors and its structure elucidated using spectral data.