actamycin
National Institutes of Health
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Fermentations of Streptomyces sp. E/784 produce low levels of the novel C-30 alkylthio-substituted ansamycin antibiotics…
of the AHB precursor, can carry a variety of substituents ranging from hydrogen to methyl, hydroxyl, methoxyl, chloro, and…
Nocardia mediterranei produces the antibiotic rifamycin B, which belongs to the ansamycin group. The structure of rifamycin…
Biosynthesis of the ansamycin antibiotic actamycin (2) was markedly increased by the addition of the precursor 3-amino-5…
Recently, GHISALBA et al.2,3) showed that the aminobenzenoid nucleus of rifamycin produced by Nocardia mediterranei was derived…