A new acetylenic alkaloid was isolated from the sponge Leucetta sp. The structure was established by analyzing spectroscopic data. The alkaloid showed cytotoxicity IC(5)(0) 2.5 mug/mL against NBT-T2 cells.
Hermawan, I., De Voogd, N. J., & Tanaka, J. (2011). An acetylenic alkaloid from the calcareous sponge Leucetta sp. Marine Drugs, 9(3), 382–386. https://doi.org/10.3390/md9030382