摘要:
New glycopeptide antibiotics of the formula: ##STR1## wherein W is the remaining portion of a glycopeptide antibiotic selected from actaplanin factors B.sub.1, B.sub.2, B.sub.3, C.sub.1, C.sub.2, C.sub.3, D.sub.1, D.sub.2, E.sub.1, G, K, L, M, N, O and actaplanin .psi.aglycone, and salts thereof, particularly the pharmaceutically acceptable salts, are useful new antibiotics are active against gram-positive bacteria and increase feed-efficiency utilization and enhance milk production in ruminants.
摘要:
New glycopeptide antibiotic CUC/CSV which has the formula: ##STR1## wherein R is L-ristosaminyl;R.sub.1 is the disaccharide mannosyl-glucosyl; andR.sub.2 and R.sub.3 are mannosyl, and its salts, particularly the pharmaceutically acceptable salts, are useful new antibiotics are active against gram-positive bacteria and increase feed-efficiency utilization and enhance milk production in ruminants.
摘要:
New glycopeptide antibiotic CUC/CSV which has the formula: ##STR1## wherein R is L-ristosaminyl;R.sub.1 is the disaccharide mannosyl-glucosyl; andR.sub.2 and R.sub.3 are mannosyl, and its salts, particularly the pharmaceutically acceptable salts, are useful new antibiotics are active against gram-positive bacteria and increase feed-efficiency utilization and enhance milk production in ruminants.
摘要:
Fermentation product A83543, comprising major components A83543A and A83543D and minor components A83543B, A83543C, A83543E, A983543F, A83543G, A83543H and A83543J, is produced by a newly described species, Saccharopolyspora spinosa. The A83543 components and their acid-addition salts (A83543 compounds) are useful as insecticides, particularly against Lepidoptera and Diptera species. Insecticidal, miticidal or ecto-parasiticidal combinations, compositions and methods are provided.
摘要:
Fermentation product A83543, comprising major components A83543A and A83543D and minor components A83543B, A83543C, A83543E, A83543F, A83543G, A83543H and A83543J, is produced by a newly described species, Saccharopolyspora spinosa. The A83543 components and their acid-addition salts (A83543 compounds) are useful as insecticides, particularly against Lepidoptera and Diptera species. Insecticidal, miticidal or ectoparasiticidal combinations, compositions and methods are provided.
摘要:
Fermentation product A83543, comprising major components A83543A and A83543D and minor components A83543B, A83543C, A83543E, A983543F, A83543G, A83543H and A83543J, is produced by a newly described species, Saccharopolyspora spinosa. The A83543 components and their acid-addition salts (A83543 compounds) are useful as insecticides, particularly against Lepidoptera and Diptera species. Insecticidal, miticidal or ecto-parasiticidal combinations, compositions and methods are provided.
摘要:
Newly-discovered antibiotic A10255 factors B, C, E, and F are produced by submerged aerobic fermentation of previously-unknown Streptomyces gardneri strain NRRL 15922, or an A10255-producing variant, mutant or recombinant thereof. The antibiotics are active against a wide variety of pathogenic bacteria, and also enhance feed-utilization efficiency in chickens, weanling pigs and cattle.
摘要:
New A52688 factors A, C, D, E, F, G, H, J and K which have the common general formula: ##STR1## are antibacterial and antineoplastic agents. Methods of preparing the antibiotics by culturing a strain of Mycoleptodiscus terrestris are provided.
摘要:
Antibiotic A54556, a complex of 8 individual factors, produced by submerged, aerobic fermentation of new Streptomyces hawaiiensis NRRL 15010. The complex and the individual, separated factors are active against Staphylococcus and Streptococcus which are penicillin resistant.
摘要:
Antibiotic A-32256 which is produced by submerged, aerobic fermentation of a Streptomyces sp. NRRL 12067. The antibiotic has shown antibacterial activity against Staphylococcus and Streptococcus and various anaerobic species. In addition, the antibiotic has shown antitrichomonas activity in vitro, as well as activity for improving ruminant feed efficency and as a mosquito larvacide.