Abstract
Two novel spiroaminals, marineosins A and B (1, 2), containing two pyrrole functionalities, were isolated from cultures of a marine sediment-derived actinomycete related to the genus Streptomyces. The marineosins, which appear to be derived from unknown modifications of prodigiosin-like pigment pathways, showed significant inhibition of human colon carcinoma (HCT-116) in an in vitro assay (IC50 = 0.5 microM for marineosin A) and selective activities in diverse cancer cell types.
Publication types
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Research Support, N.I.H., Extramural
MeSH terms
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Anticarcinogenic Agents / chemistry*
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Anticarcinogenic Agents / isolation & purification
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Anticarcinogenic Agents / pharmacology
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Antifungal Agents / chemistry*
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Antifungal Agents / isolation & purification
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Antifungal Agents / pharmacology
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Candida albicans / drug effects
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Cell Line, Tumor
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Drug Screening Assays, Antitumor
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Humans
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Marine Biology
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Molecular Conformation
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Pyrroles / chemistry*
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Pyrroles / isolation & purification
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Pyrroles / pharmacology
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Spiro Compounds / chemistry*
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Spiro Compounds / isolation & purification
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Spiro Compounds / pharmacology
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Streptomyces / chemistry*
Substances
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Anticarcinogenic Agents
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Antifungal Agents
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Pyrroles
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Spiro Compounds
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marineosin A
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marineosin B