摘要:
A new antitumor antibiotic designated herein as BU-3862T is produced by fermentation of Streptomyces hygroscopicus ATCC 53709. BU-3862T and its diacetyl and dihydro derivatives inhibit the growth of tumors in experimental animals.
摘要:
A new antitumor antibiotic designated herein as BU-3862T is produced by fermentation of Streptomyces hygroscopicus ATCC 53709. BU-3862T and its diacetyl and dihydro derivatives inhibit the growth of tumors in experimental animals.
摘要:
New antibiotics designated BU-3292T A and B are provided which exhibit antimicrobial activity and also inhibit the growth of tumors in experimental animal systems. BU-3292T A is produced by fermentation of Elytrosporangium sp. nov. (ATCC 53784) while the BU-3292T B compound is obtained by oxidation of BU-3292T A.
摘要:
The compound 3,7-dihydroxytropolone having the formula ##STR1## is produced by fermentation of Streptomyces tropolofaciens and is found to inhibit the growth of mammalian tumors.
摘要:
The compound 3,7-dihydroxytropolone having the formula ##STR1## is produced by fermentation of Streptomyces tropolofaciens and is found to inhibit the growth of mammalian tumors.
摘要:
A novel water-soluble peptide designated herein as Bu-2517 is produced by fermentation of Empedobacter sp. strain G393-B445 (ATCC 31962). The antibiotic exists in a cyclic depsipeptide structure and contains the amino acids D-serine, D-proline, L-proline, D-threo-.beta.-hydroxyaspartic acid, L-threo-.beta.-hydroxyaspartic acid, L-arginine and trans-L-3-hydroxyproline and the residue of the C.sub.14 fatty acid, 3-hydroxytetradecanoic acid. The Bu-2517 antibiotic inhibits the growth of a variety of aerobic and anaerobic gram-positive bacteria.
摘要:
Disclosed is a process for preparation of the water-soluble peptide antibiotic designated Bu-2517 by fermentation of Empedobacter sp. strain G393-B445 (ATCC 31962).
摘要:
A novel antibiotic complex designated BBM-2478 is produced by fermentation of an actinomycete strain J907-21 (ATCC 39417). The complex may be separated chromatographically into two bioactive components designated BBM-2478A and BBM-2478B. The BBM-2478A component displays both antibacterial and antitumor activity while the BBM-2478B component has antibacterial activity.
摘要:
A novel antibiotic designated BU-4146T is produced by fermentation of Streptomyces amphibiosporus strain R310-104 (ATCC-53964). The antibiotic possesses both antifungal and antitumor activity.
摘要:
A novel antibiotic complex designated BBM-2478 is produced by fermentation of an actinomycete strain J907-21 (ATCC 39417). The complex may be separated chromatographically into two bioactive components designated BBM-2478A and BBM-2478B. The BBM-2478A component displays both antibacterial and antitumor activity while the BBM-2478B component has antibacterial activity.