Netamines O–S, five new tricyclic guanidine alkaloids from the Madagascar sponge Biemna laboutei and their antimalarial activity. - Université de La Réunion Access content directly
Journal Articles Chemistry and Biodiversity Year : 2015

Netamines O–S, five new tricyclic guanidine alkaloids from the Madagascar sponge Biemna laboutei and their antimalarial activity.

Abstract

In our continuing program to isolate new compounds from the Madagascar sponge Biemna laboutei, five new tricyclic guanidine alkaloids, netamines O - S (1-5, resp.), have been identified together with the known compounds netamine E (6) and mirabilin J (7). The structures of all new netamines were assigned on the basis of spectroscopic analyses. Their relative configurations were established by analysis of ROESY data and comparison with literature data. Netamines O, P, and Q, which were isolated in sufficient quantities, were tested for their cytotoxic activities against KB cells and their activities against the malaria parasite Plasmodium falciparum. Netamines O and Q were found to be moderately cytotoxic. Netamines O, P, and Q exhibited antiplasmodial activities with IC50 values of 16.99±4.12, 32.62±3.44, and 8.37±1.35 μM, respectively.
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Dates and versions

hal-01243705 , version 1 (16-11-2016)

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Emmanuelle Gros, Marie-Therese Martin, Jonathan Sorres, Céline Moriou, Jean Vacelet, et al.. Netamines O–S, five new tricyclic guanidine alkaloids from the Madagascar sponge Biemna laboutei and their antimalarial activity.. Chemistry and Biodiversity, 2015, 12, pp.1725-1733. ⟨10.1002/cbdv.201400350⟩. ⟨hal-01243705⟩
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