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https://doi.org/10.1016/j.tet.2006.06.063
Copy DOIJournal: Tetrahedron | Publication Date: Jul 24, 2006 |
Citations: 40 |
In our continuing program to identify bioactive compounds from marine invertebrates, the MeOH/EtOAc (1:1) extract of three collections of the Madagascar sponge, Biemna laboutei, was found to be cytotoxic to a series of human tumor cells. From the two sponges, seven new guanidine alkaloids, designated netamines A–G ( 1– 7), have been isolated and their structures elucidated. Compounds 3 and 4 were found to be cytotoxic against three tumor cells with GI 50 values in the micromolar range.
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