4α-Methylated steroids with cytotoxic activity from the soft coral Litophyton mollis (CROSBI ID 231836)
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Zovko Končić, Marijana ; Ioannou, Efstathia ; Sawadogo, Wamtinga Richard ; Abdel-Razik, Ayman F. ; Vagias, Constantinos ; Diederich, Marc ; Roussis, Vassilios
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4α-Methylated steroids with cytotoxic activity from the soft coral Litophyton mollis
Seven new (1–3, 5 and 8–10) and three previously reported (4, 6 and 7) 4α-methylated steroids were isolated from the organic extract of the gorgonian Litophyton mollis. The structures and the relative configurations of the isolated natural products were determined on the basis of extensive analyses of their NMR and MS data. Metabolites 1 and 5–8 exhibited cytotoxic activity against K562 human chronic myelogenous leukemia cells with IC50 values below 10 μM, while at the same time displaying low toxicity against healthy PBMCs. © 2016 Elsevier Inc.
4α-Methylated steroids ; Cytotoxic activity ; Litophyton mollis ; Structure elucidation
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