摘要:
A biologically pure culture of Actinomadura Sp. Strain H710-49 (ATCC 39144) is provided. The antibiotic designated BBM-1644 may be produced by fermentation of the subject culture.
摘要:
A novel antitumor antibiotic designated herein as BBM-2040 is produced by fermentation of Streptomyces sp. strain J576-99 (ATCC 39143). BBM-2040, which may be recovered from the fermentation broth in either a desmethanol (BBM-2040B) or methanol-adduct (BBM-2040A) form, inhibits gram-positive and acid-fast bacteria and inhibits the growth of tumors such as P388 leukemia in mice.
摘要:
A novel peptide antibiotic complex designated herein as Bu-2470 is produced by fermentation of Bacillus circulans strain G493-B6 (ATCC 31,805). Complex Bu-2470 may be separated into four bioactive peptide antibiotics designated as Bu-2470A, B.sub.1, B.sub.2a, and B.sub.2b. The complex and individual bioactive factors possess significant antimicrobial activity.
摘要:
A novel water-soluble basic antibiotic complex designated herein as Bu-2349 is produced by fermentation of Bu-2349-producing strains of the genus Bacillus. Complex Bu-2349 and its bioactive components designated as Bu-2349A and B are found to possess marked inhibitory activity against gram-positive and gram-negative bacteria including various types of aminoglycoside-resistant bacteria.
摘要:
A novel water-soluble basic antibiotic complex designated herein as Bu-2349 is produced by fermentation of Bu-2349-producing strains of the genus Bacillus. Complex Bu-2349 and its bioactive components designated as Bu-2349A and B are found to possess marked inhibitory activity against gram-positive and gram-negative bacteria including various types of aminoglycoside-resistant bacteria.
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:
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 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.