Claims
- 1. The process for the preparation of BU-2867T F having the formula ##STR4## which comprises cultivating Polyangium brachysporum (ATCC 53080) or a BU-2867T F-producing mutant thereof in an aqueous nutrient medium containing assimilable sources of carbon and nitrogen under submerged aerobic conditions until a recoverable amount of BU-2867T F is produced by said organism in said culture medium and then recovering the BU-2867T F antibiotic from the culture medium substantially free of co-produced substances.
- 2. The process for the preparation of BU-2867T G having the formula ##STR5## which comprises cultivating a Polyangium brachysporum (ATCC 53080) or a BU-2867T G-producing mutant thereof in an aqueous nutrient medium containing assimilable sources of carbon and nitrogen under submerged aerobic conditions until a recoverable amount of BU-2867T G is produced by said organism in said culture medium and then recovering the BU-2867T G antibiotic from the culture medium substantially free of co-produced substances.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a division of our co-pending application Ser. No. 908,850 filed Sept. 18, 1986, now U.S. Pat. No. 4,777,160.
US Referenced Citations (1)
Number |
Name |
Date |
Kind |
3651216 |
Ringel et al. |
Mar 1972 |
|
Divisions (1)
|
Number |
Date |
Country |
Parent |
908850 |
Sep 1986 |
|