%0 Journal Article %A Brana, Alfredo F. %A Sarmiento-Vizcaino, Aida %A Osset, Miguel %A Perez-Victoria, Ignacio %A Martin, Jesus %A de Pedro, Nuria %A de la Cruz, Mercedes %A Diaz, Caridad %A Vicente, Francisca %A Reyes, Fernando %A Garcia, Luis A. %A Blanco, Gloria %T Lobophorin K, a New Natural Product with Cytotoxic Activity Produced by Streptomyces sp M-207 Associated with the Deep-Sea Coral Lophelia pertusa %D 2017 %U http://hdl.handle.net/10668/19298 %X The present article describes the isolation of a new natural product of the lobophorin family, designated as lobophorin K (1), from cultures of the marine actinobacteria Streptomyces sp. M-207, previously isolated from the cold-water coral Lophelia pertusa collected at 1800 m depth during an expedition to the submarine Aviles Canyon. Its structure was determined using a combination of spectroscopic techniques, mainly ESI-TOF MS and 1D and 2D NMR. This new natural product displayed cytotoxic activity against two human tumor cell lines, such as pancreatic carcinoma (MiaPaca-2) and breast adenocarcinoma (MCF-7). Lobophorin K also displayed moderate and selective antibiotic activity against pathogenic Gram-positive bacteria such as Staphylococcus aureus. %K lobophorins %K spirotetronate antibiotic %K Streptomyces %K antitumor %K Cantabrian Sea-derived actinobacteria %K Spirotetronate antibiotics %K Metabolites %~