摘要:
A novel water-soluble basic glycopeptide antibiotic complex designated herein as Bu-2231 is produced by fermentation of a Bu-2231-producing strain of Streptoalloteichus hindustanus. Complex Bu-2231 and two of its major components designated herein as Bu-2231 A and B are found to inhibit the growth of various Gram-positive and Gram-negative and acid-fast bacteria as well as certain plant pathogens. The complex and components Bu-2231 A and B are also useful in inhibiting the growth of various tumors in rodents, for example, Walker 256 carcinosarcoma and Lewis Lung carcinoma.
摘要:
A fermentation process is disclosed for preparing the known aminoglycoside antibiotics apramycin and nebramycin factor V' by culturing Streptoalloteichus hindustanus A.T.C.C. 31217, 31218 or 31219. The so-produced nebramycin factor V' may subsequently be converted to tobramycin by base catalyzed hydrolysis.
摘要:
A novel aminoglycoside antibiotic complex designated herein as Bu-2183 is produced by fermentation of Pseudomonas sp. strain D946-B83, A.T.C.C. 31086. Complex Bu-2183 is known to consist of at least five components, said components being herein designated Bu-2183 A, A.sub.2, B, C and D. The complex and the individual aminoglycoside components Bu-2183 A, A.sub.2, and B are found to have a broad spectrum of antibacterial activity and are especially useful in inhibiting aminoglycoside-resistant organisms including Pseudomonas species.
摘要:
A novel antibiotic complex designated herein as Bu-2313 is produced by fermentation of Micropolyspora sp. A.T.C.C. 31295, 31296, 31297 and 31298. The complex is separated into two bioactive components, Bu-2313A and BU-2313B, which are structurally related to the streptolydigin-tirandamycin group of antibiotics. They are active against anaerobic bacteria.
摘要:
A novel aminoglycoside antibiotic complex designated herein as Bu-2183 is produced by fermentation of Pseudomonas sp. strain D946-B83, A.T.C.C. 31086. Complex Bu-2183 is known to consist of at least five components, said components being herein designated Bu-2183 A, A.sub.2, B, C and D. The complex and the individual aminoglycoside components Bu-2183 A, A.sub.2, and B are found to have a broad spectrum of antibacterial activity and are especially useful in inhibiting aminoglycoside-resistant organisms including Pseudomonas species.
摘要:
Antibiotic Bu-2659 complex, containing components A, B, C, D and E, is produced by cultivation of Streptomyces hygroscopicus Strain No. J296-21, ATCC No. 39150.
摘要:
Antibiotic Bu-2659 complex, containing components A, B, C, D and E, is produced by cultivation of Streptomyces hygroscopicus Strain No. J296-21, ATCC No. 39150.
摘要:
A novel antibiotic complex designated herein as Bu-2313 is produced by fermentation of Micropolyspora sp. A.T.C.C. 31295, 31296, 31297 and 31298. The complex is separated into two bioactive components, Bu-2313A and Bu-2313B, which are structurally related to the streptolydigin-tirandamycin group of antibiotics. They are active against anaerobic bacteria.
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.