Halitulin, a new cytotoxic alkaloid from the marine sponge Haliclona tulearensis
Tetrahedron Letters, Volume 40, No. 5, Year 1999
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Halitulin (2), a novel bisquinolinylpyrrole has been isolated from the sponge Haliclona tulearensis. Its structure was elucidated mainly on the basis of spectroscopic data as well as chemical modifications. Halitulin was found to be cytotoxic against several tumor cells: P-388, A-549, HT-29 and MEL-28 in concentrations of 12-25 ng/ml.