Abstract
Benzoquinone ansamycin antibiotic herbimycin A was synthesized in 19 linear steps and 4.2% yield. Highlighted is the design of a chiral γ-lactone as the C11-C15 synthon that enabled a facile catalytic asymmetric synthesis of the challenging C8-C20 fragment of the target molecule. The easy access to the stereogenic centers and high overall yield made the strategy applicable in the molecular editing of benzoquinone ansamycins.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Anti-Bacterial Agents / chemical synthesis
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Benzoquinones / chemistry*
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Catalysis
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Lactams, Macrocyclic / chemical synthesis
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Lactones / chemistry*
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Molecular Structure
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Rifabutin / analogs & derivatives*
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Rifabutin / chemical synthesis
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Rifabutin / chemistry
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Stereoisomerism
Substances
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Anti-Bacterial Agents
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Benzoquinones
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Lactams, Macrocyclic
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Lactones
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Rifabutin
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quinone
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herbimycin