Abstract
Cervimycins A-D are novel polyketide glycosides with significant activity
against multi-drug-resistant staphylococci and vancomycin-resistant
enterococci. They are produced by a strain of Streptomyces tendae,
isolated from an ancient cave. The structures of the cervimycins
were determined by performing extensive NMR and chemical degradation
studies. All cervimycins have a common tetracyclic polyketide core
that is substituted with unusual di- and tetrasaccharide chains,
composed exclusively of trideoxysugars; however, they differ in
the acetyl and carbamoyl ring substituent and in the highly unusual
terminal methylmalonyl and dimethylmalonyl residues.
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