3-Hydroxyrifamycin S and further novel ansamycins from a recombinant strain R-21 of Nocardia mediterranei

  • J Antibiot (Tokyo). 1981 Aug;34(8):971-9. doi: 10.7164/antibiotics.34.971.
P Traxler ,  T Schupp ,  H Fuhrer ,  W J Richter
PMID: 7319930 DOI: 10.7164/antibiotics.34.971
Abstract

The structures of 3-hydroxyrifamycin S and six further novel ansamycins isolated from the recombinant strain R-21 of Nocardia mediterranei were identified by spectroscopic methods. Three types of structure were distinguished: Type 1: Ansamycins of the rifamycin S type Type 2: Ansamycins of the rifamycin G type Type 3: Ansamycins of the rifamycin W type.

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