Phakellia costata

Cyclic peptide antibiotic. Constit. of the sponges Phakellia costata and Stylotella aurantium. Cytotoxic. Amorph. solid. Mp 247-249°. [a] -50.5 (c, 0.33 in CHCI3). 

Pettit, G.R., Xu, J.-P., Cichacz, Z., Schmidt, J.M., Dorsaz, A., Boyd, M. R-, and Cerny, R.L. (1995a) Antineoplastic agents. 303. Isolation and structure of the human cell growth inhibitory phakellistatin 4 from the Western Pacific sponge Phakellia costata. Heterocycles, 40, 501-506. 

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