Fermentation process for producing a rifamycin derivative

Details Fermentation process for producing a rifamycin derivative Fermentation process for producing a rifamycin derivative

1980-01-17

1981-11-03

Tanenholtz, Alvin E.

Chemistry: molecular biology and microbiology

Micro-organism, tissue cell culture or enzyme using process...

Preparing heterocyclic carbon compound having only o, n, s,...

435172, 435872, 2602393P, C12P 1718

Patent

active

042986923

ABSTRACT:
New antibiotically active compounds having the basic structure of rifamycin S, namely 3-hydroxyrifamycin S (formula A: X.dbd.>C.dbd.O; R.sup.1 .dbd.OH; R.sup.2 .dbd.H), 3,31-dihydroxyrifamycin S (formula A: X.dbd.>C.dbd.O; R.sup.1 .dbd.R.sup.2 .dbd.OH) and 1-desoxy-1-oxarifamycin S (formula A: X.dbd.--O--; R.sup.1 .dbd.R.sup.2 .dbd.H) ##STR1## are formed by cultivating, under aerobic conditions, a strain of Nocardia mediterranei which is derived from Streptomyces mediterranei ATCC 13 685 as the parent strain and is characterized by the ability to produce at least one of the mentioned compounds. The recombinant strain Nocardia mediterranei DSM 1415 has proved suitable. The mentioned rifamycin S analogues have analogous antibiotic properties to this but have a wider range of action, especially against gram-negative bacteria.

REFERENCES:
patent: 4042683 (1977-08-01), White et al.
Journal of Bacteriology, vol. 121, No. 1, pp. 128-136, (1975).

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