Abstract
Regio- and chemoselective syntheses of enantiopure bis-furanoids are described. These compounds are chirons for several families of bioactive natural products, including isoavenaciolide and ethisolide. Reaction of a 3,4-epoxy pyran with beta-ketoester dianions delivers substituted pyranosides in high yield. Cyclization then yields fused furan-pyran intermediates. Oxidation, deprotection, and rearrangement lead to bis-furanoids that bear the essential framework and stereochemistry of ethisolide and isoavenaciolide.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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4-Butyrolactone / analogs & derivatives*
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4-Butyrolactone / chemical synthesis*
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4-Butyrolactone / chemistry
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4-Butyrolactone / pharmacology
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Anti-Bacterial Agents / chemical synthesis*
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Anti-Bacterial Agents / pharmacology*
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Antineoplastic Agents / chemical synthesis*
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Antineoplastic Agents / pharmacology*
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Aspergillus / isolation & purification
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Cyclization
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Epoxy Compounds / chemistry
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Furans / chemical synthesis*
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Furans / chemistry
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Furans / pharmacology*
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Magnetic Resonance Spectroscopy
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Molecular Structure
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Monosaccharides / chemistry
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Penicillium / isolation & purification
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Stereoisomerism
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Tandem Mass Spectrometry
Substances
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Anti-Bacterial Agents
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Antineoplastic Agents
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Epoxy Compounds
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Furans
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Monosaccharides
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ethisolide
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4-Butyrolactone
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isoavenaciolide