摘要:
The present invention relates to a new compound designated as AM-2282, having antibiotic activity and pharmacological activity, and a process of preparing same.
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 new antibiotic, Fortimicin C, is produced by fermentation of a microorganism belonging to the genus Micromonospora. The antibiotic is accumulated in the culture medium and is isolated therefrom.
摘要:
A new antibiotic designated as SF-1623 substance exhibiting a useful antibacterial activity against gram-negative bacteria is now produced by cultivating a new strain ATCC 21999 of the known species Streptomyces chartreusis. The SF-1623 substance in the form of its an alkali metal salt may be recovered from the culture when the cultivation is effected under aerobic conditions in the presence of an alkali metal thiosulfate.
摘要:
A novel antibiotic B-98891, which is produced by culturing a strain of microorganisms belonging to the genus Streptomyces, shows remarkable combatting effect against microorganisms causing plant diseases. Compositions containing the antibiotic are useful for controlling diseases in plants with less undesirable side effects.
摘要:
New antibiotic U-47,929 produced by the controlled fermentation of the new microorganism Streptomyces ficellus Dietz, sp. n., NRRL 8067. This antibiotic and its acid-addition salts are active against Gram-positive bacteria. Accordingly, they can be used in various environments to eradicate or control such bacteria.
摘要:
New antitumor agents named aclacinomycins A and B, which are anthracycline glycosides and inhibit the growth of various microorganisms e.g., Staphylococcus aureus, Micrococcus flavus, Corynebacterium bovis and inhibit the growth of animal tumors such as leukemia L1210 and P388 and lymphoma 6C3HED in mice and hepatomas in rats are produced by the fermentation of a microorganism belonging to the genus Streptomyces which has been designated Streptomyces galilaeus (MA144-M1 and A.T.C.C. 31133); they are recovered from the broth by conventional methods for recovering antibiotics.
摘要:
By adding a specific amine in culturing under aerobic conditions actinomycetales capable of producing phleomycin group antibiotics, which have been inoculated into a nutrient medium to produce antitumor phleomycin group antibiotics, it is possible to obtain specific phleomycin group antibiotics having a side chain structure corresponding to said amine. The phleomycin group antibiotics thus produced are collected from the culture medium in a conventional way.
摘要:
A new antibiotic, Fortimicin A, is produced by fermentation of a microorganism belonging to the genus Micromonospora. The antibiotic is accumulated in the culture medium and is isolated therefrom.