Abstract
Cytorhizins A-D, four novel polyketide heterodimers, were isolated from the endophytic fungus Cytospora rhizophorae A761. These new compounds shared an unprecedented 6/6/5/6/8 or 6/6/5/6/7 pentacyclic ring system and fused as a fascinating cagelike skeleton, embodying by a polyoxygenated isopentyl unit and a highly structure-combined benzophenone scaffold. Their structures were elucidated by extensive spectroscopic analyses and X-ray diffraction techniques. Moreover, compounds 1-4 were evaluated for in vitro cytotoxicity and antimicrobial activity.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Anti-Bacterial Agents / chemistry
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Anti-Bacterial Agents / isolation & purification
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Anti-Bacterial Agents / pharmacology*
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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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Ascomycota / chemistry*
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Benzophenones / chemistry
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Benzophenones / isolation & purification
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Benzophenones / pharmacology*
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Cell Line, Tumor
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Cell Proliferation / drug effects
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Crystallography, X-Ray
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Drug Screening Assays, Antitumor
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Escherichia coli / drug effects
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Humans
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Microbial Sensitivity Tests
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Models, Molecular
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Molecular Structure
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Polyketides / chemistry
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Polyketides / isolation & purification
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Polyketides / pharmacology*
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Staphylococcus aureus / drug effects
Substances
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Anti-Bacterial Agents
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Antineoplastic Agents
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Benzophenones
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Polyketides