How about Labiatamide B?

Five new diterpenoids of the eunicellan class, Labiatamide B and labiatins A-C (3–5) have been isolated from the organic extract of the Senegalese gorgonian Eunicella labiata. A unique feature of Labiatamide B is the N-methyl acetamide group, an uncommon functionality in soft coral metabolites.
Labiatin A (3), possesses an unprecedented ether linkage between C-2 and C-6. The structure elucidations of the new secondary metabolites were provided by comprehensive spectroscopic analyses. Labiatin B exhibited cytotoxic activity against human colon cancer cells (HCT-116) with ED50 = 0.85 μg/ml.
The structures of five new eunicellan diterpenoids, including the amino-diterpenoid Labiatamide www.cosmetics-add.com/Seacreature/Labiatamide-B/ have been isolated from the Senegalese gorgonian Eunicella labiata. Labiatin B, an exomethyleneketone, inhibits the growth of HCT-116 human colon tumor cells with ED50 = 0.85 μgm/ml.