摘要:
Bafilomycins of the formula ##STR1## in which R.sup.1 is hydrogen or CH.sub.3, andR.sup.2 is hydrogen, or the group ##STR2## are produced by culturing certain streptomyces, e.g. Tu 1922, Tu 2437 and Tu 2599. Those wherein at least one of the OH groups is acylated are new. The compounds are pesticidally active.
摘要:
Pesticidally active substantially pure nikkomicin fractions obtained from Streptomyces tendae Ettlinger et al Tu 901, the fractions being selected from the group consisting of ##STR1## a mixture of nikkomicin I and J, and a mixture of nikkomicin M and N.
摘要:
A method of combating arthropods, comprising applying to the arthropods, or to a habitat infested therewith an arthropodicidally effective amount of an antibiotic which (a) is colorless, very readily soluble in water and in pyridine but insoluble in other customary organic solvents, gives a positive reaction with ninhydrin, sodium metaperiodate/benzidine and potassium permanganate and gives a yellow coloration with iron (III) chloride, (b) has the UV and IR spectra substantially as shown in FIGS. 1 and 2, (c) on chemical degradation yields uracil, an amino-hexuronic acid and an amino-acid containing a pyridine ring, (d) on paper electrophoresis proves to be an amphoteric substance and has an isoelectric point at about pH 6 and (e) consists of the elements carbon, hydrogen, oxygen and nitrogen, or one or more active components of the antibiotic mixture, the active agent being applied alone or in admixture with a diluent or carrier. The antibiotic is known as Nikkomycin which is apparently a mixture of components of the formula ##STR1## in which R.sub.1 is ##STR2## and R.sub.2 is hydrogen, ##STR3##
摘要:
A method of combating arthropods, comprising applying to the arthropods, or to a habitat infested therewith an arthropodicidally effective amount of an antibiotic which (a) is colorless, very readily soluble in water and in pyridine but insoluble in other customary organic solvents, gives a positive reaction with ninhydrin, sodium metaperiodate/benzidine and potassium permanganate and gives a yellow coloration with iron (III) chloride, (b) has the UV and IR spectra substantially as shown in FIGS. 1 and 2, (c) on chemical degradation yields uracil, an amino-hexuronic acid and an amino-acid containing a pyridine ring, (d) on paper electrophoresis proves to be an amphoteric substance and has an isolectric point at about pH 6 and (e) consists of the elements carbon, hydrogen, oxygen and nitrogen, or one or more active components of the antibiotic mixture, the active agent being applied alone or in admixture with a diluent or carrier. The antibiotic is known as Nikkomycin which is apparently a mixture of components of the formula ##STR1## in which R.sub.1 is ##STR2## and R.sub.2 is hydrogen, ##STR3##
摘要:
The invention relates to the new antibiotic Lysolipin including two components X and I, and derivatives thereof. Lysolipin is formed when the strain Streptomyces violaceoniger (Waksman et Curtis) Waksman et Henrici Tu 96, which strain has been deposited under the reference NRRL 8097 at the Northern Regional Laboratory, U.S. Department of Agriculture, Peoria, Illinois, is cultured in a nutrient medium. The structural formulae of the 2 components are ##STR1## Lysolipin I and X and their derivatives have antibacterial activity and are effective against yeast - like fungi, such as Candida albicans. Their antibiotic action probably depends on an inhibition of the cell wall synthesis.
摘要翻译:本发明涉及包含两种组分X和I的新型抗生素赖溶脂蛋白及其衍生物。 当菌株Streptomyces violaceoniger(Waksman et Curtis)Waksman et HenriciTü96将菌株以参考文献NRRL 8097保藏在美国伊利诺伊州皮奥里亚州的美国农业部北部地区实验室时,形成溶纤剂,培养于营养培养基 。 2种成分的结构式为Lysolipin I,Lysolipin X Lysolipin I和X及其衍生物具有抗菌活性,对酵母菌真菌如白色念珠菌有效。 它们的抗生素作用可能取决于细胞壁合成的抑制。
摘要:
A new polycyclic peptide antibiotic termed gallidermin is disclosed and described, together with a process for producing such antibiotic by fermination of a new microorganism, Staphylococcus gallinarum (DSM 4616).
摘要:
The invention relates especially to 2-(3'-hydroxypyrid-2'-yl)-2-thiazoline-4-carboxylic acid derivatives of the formula (I) and salts and also certain metal complexes of these compounds, processes for their manufacture, pharmaceutical agents containing such compounds and the use of these compounds. ##STR1## In the formula, R.sup.1 represents free, etherified or esterified hydroxy, R.sup.2 represents hydrogen or an aliphatic, carbocyclic or carbocyclic-aliphatic radical having 1-12 carbon atoms, and R.sup.3 represents hydrogen or an unsubstituted aliphatic radical having 1-7 carbon atoms.The compounds of the formula (I) can be used, for example, for the abstraction of heavy metals from the organism of warm-blooded animals and/or they have an antibiotic action.
摘要:
A microbiological process for the preparation of N,N'-ethylenediaminedisuccinic acid of formula (1), by (a) precultivation of a strain of the genus Amycolatopsis orientalis on a specified nutrient medium (1st preculture), (b) inoculation of a nutrient solution of the same composition as the base of the production fermenter by the 1st preculture (2nd preculture), (c) inoculation of the base nutrient solution in the production fermenter with the 2nd preculture and incubation in accordance with a specified timetable, (d) feeding of the production fermenter in the fed-batch process with a feeding solution under aerobic conditions at a pH of from 2 to 8 and at a temperature of from 15.degree. to 40.degree. C., wherein the base nutrient and feeding solutions are free of zinc-containing compounds, is described. The compound prepared by the process according to the invention is suitable as complexing agent with good biodegradability in detergents. ##STR1##