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The structure of efrotomycin.

R S Dewey, B H Arison, J Hannah

    The Journal of Antibiotics
    |December 1, 1985
    PubMed
    Summary
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    The antibiotic efrotomycin was isolated from Nocardia lactamdurans. Chemical analysis revealed it is a glycoside of the known antibiotic aurodox, with a specific disaccharide linkage.

    Area of Science:

    • Microbiology
    • Organic Chemistry
    • Biochemistry

    Background:

    • Antibiotics are crucial in combating bacterial infections.
    • Nocardia lactamdurans is a known source of bioactive compounds.
    • Efrotomycin is an antibiotic with potential therapeutic applications.

    Purpose of the Study:

    • To isolate and characterize the antibiotic efrotomycin.
    • To elucidate the chemical structure of efrotomycin.
    • To determine the relationship between efrotomycin and aurodox.

    Main Methods:

    • Isolation of efrotomycin from Nocardia lactamdurans cultures.
    • Mass spectral and Nuclear Magnetic Resonance (NMR) analyses for structural determination.
    • Chemical degradation (ozonolysis and hydrolysis) to identify constituent parts.

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    Main Results:

    • Efrotomycin (I) was isolated as an amorphous yellow powder.
    • Mass spectral and NMR data confirmed efrotomycin is a glycoside of aurodox (II).
    • The disaccharide 6-deoxy-4-O-(6-deoxy-2,4-di-O-methyl-alpha -L-mannopyranosyl)-3-O-methyl-beta-D-allopyranose was identified and its linkage to aurodox elucidated.

    Conclusions:

    • The chemical structure of efrotomycin has been determined.
    • Efrotomycin represents a novel glycosidic derivative of the antibiotic aurodox.
    • Understanding efrotomycin's structure provides insights into antibiotic biosynthesis and modification.