Abstract:
A MICROBIOLOGICAL PROCESS FOR PREPARING THE ANTIBIOTIC LINCOMYCIN WITHOUT THE CONCOMITANT PRODUCTION OF LINCOMYCIN B (4''-DEPROPYL-4''-ETHYLLINCOMYCIN). THE ABSENCE OF LINCOMYCIN B IN THE FERMENTATION BEER RESULTS IN INCREASED LINCOMYCIN RECOVERY EFFIEIENCY FROM THE FERMENTATION BEER.
Abstract:
THIS INVENTION DEALS WITH ANTIBIOTICS AND METHODS OF RECOVERING AND PURIFYING THEM. THE SUBSTANCES ARE SPARSOGENIN HAVING A CALCULATED EMPIRICAL FORMULA
Abstract:
This invention relates to novel antibacterial compounds and to processes for preparing them. It is particularly directed to novel 3-nucleotides of lincomycin, and of analogs thereof, and of celesticetins. The compounds of the invention can be shown by the following formula:
WHEREIN Y is -SR wherein R is alkyl of one to six carbon atoms, inclusive, , OR -S-CH2-CH2-OH, R1 is H, or cis or trans lower-alkyl of from one to eight carbon atoms, inclusive; R2 is H, CH3, or C2H5; X is OH, chlorine, bromine, iodine or -OR3 wherein R3 is alkyl of one to six carbon atoms, inclusive, each in the (R) or (S) configuration; and Z is a nucleoside -5''- phosphate group wherein said nucleoside can be adenosine, guanosine, cytidine or uridine; and salts thereof. Examples of alkyl of from one to eight carbon atoms are methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, and octyl and isomers thereof.
Abstract:
MELINACIDIN ANTIBIOTIC COMPLEX (U-26,362) PRODUCIBLE BY CULTURING ACROSTALAGMUS CINNABORINUS VAR, MELINACIDINUS IN A NUTRIENT MEDIUM. MELINACIDIN ANTIBIOTIC COMPLEX IS ANTIBACTERIALLY ACTIVE AND CAN BE USED TO INHIBIT THE GROWTH OF VARIOUS MICROORGANISMS, FOR EXAMPLE, BACILLUS SUBSTILIS, STAPHYLOCOCCUS AUREUS, SLAMONELLA PULORUM, STREPTOCOCCUS HEMOLYTICUS, STREPTOCOCCUS FAECALIS, AND PROTEUS VULGARIS.
Abstract:
1,131,079. Armentomycin. UPJOHN CO. 25 March, 1966 [16 April, 1965], No. 13338/66. Heading C2A. [Also in Divisions A5, C5 and D2] The invention relates to the new antibiotic, armentomycin, which inhibits the growth of Gram-negative bacteria and has the following properties: Empirical formula, C 4 H 7 Cl 2 NO 2 ; an analysis, C-28À39%, H-4À44%, N-9À09%, Cl-40À60%, and O-17À48%; a calculated mol. wt. of 172; an equivalent weight of 168 by KOH titration and 174 by perchloric acid titration; an optical rotation [α] 25 D = +6À7‹ (C. 0À74 in water) and [α] 25 D = 26À240 (C. 0À74 in water at pH 1À0); a pKa of 8À28; no U.V. maxima between 220 and 400 mÁ; an I.R. spectrum as in Fig. 1 above; and is soluble in water, methanol and ethanol, and insoluble in methylene chloride, acetone and non-polar solvents. Armentomycin is amphoteric and forms acid addition salts and salts with bases. Salts include those with physiologically active bases, e.g. theophylline, theobromine, caffeine, antihistamine bases, nicotinamide, nicotinic acid hydrazide, adrenalin, ephedrine, and choline, and also with sodium, potassium and calcium. The antibiotic is produced by aerobic submerged cultivation of the new microorganism, Streptomyces armentosus var. armentosus, NRRL.3176, in aqueous nutrient medium containing sources of assimilable carbon and nitrogen. H may be isolated from the fermentation broth by, e.g. solvent extraction, liquidliquid distribution, adsorption on ion-exchange resins or surface-active agents, and purified by crystallization from mixed solvents.