Abstract
A new scalarane-type pentacyclic sesterterpene, sesterstatin 6 (6), was isolated in 8.3 x 10(-7)% yield from the Republic of Maldives marine sponge Hyrtios erecta. The structure was elucidated by analyses of HRMS and high-field 2-D NMR spectra. Sesterstatin 6 showed significant cancer cell growth inhibition against murine P388 lymphocytic leukemia and a series of human tumor cell lines (ED50 0.17 microg/mL, GI50 1.8-8.9 x 10(-1) microg/mL) and proved to be the most inhibitory of the series.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Animals
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Antineoplastic Agents / chemistry
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Antineoplastic Agents / isolation & purification*
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Antineoplastic Agents / pharmacology
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Drug Screening Assays, Antitumor
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Humans
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Indian Ocean
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Leukemia P388
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Mice
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Molecular Structure
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Nuclear Magnetic Resonance, Biomolecular
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Porifera / chemistry*
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Terpenes / chemistry
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Terpenes / isolation & purification*
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Terpenes / pharmacology
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Tumor Cells, Cultured
Substances
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Antineoplastic Agents
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Terpenes
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sesterstatin 6