| 摘要 |
1493186 Antibiotic BN-130 MEIJI SEIKA KAISHA Ltd 17 April 1975 [17 April 1974] 15941/75 Heading C2A The invention is directed to antibiotic BN-130 substance which is characterized in being a colourless or faintly yellow oil having no definite melting point, which solidifies at about 0‹ C. and is in the state of an oil at about 40‹ C.; being of an acidic nature and having a carboxylic group; being soluble in methanol, ethanol, nbutanol, acetone, ethyl acelate and methyl isobutylketone and slightly soluble in benzene and chloroform but insoluble in water; showing an optical rotation of [α] D <SP>25</SP>-19À2‹ in 1% methanol; being positive to the potassium permanganate reaction and the iodine reaction but negative to the ninhydrin reaction, silver nitrate reaction, Sakaguchi reaction and ferric chloride reaction; having the following filter paper electrophoresis characteristics: does not move under acidic conditions (pH 1À9 at 3000 volts, subjected to electrophoresis for 10 mins.) but moves towards the anode by 1À8 cm. under alkaline conditions (pH 8À1 at 300 volts subjected to electrophoresis for 2 hours) giving an elemental analysis (65À24%, H 8À79%, N 4À85%, and O 21À12%; showing a molecular weight of 520 as determined by titration and 550 by the vapour pressure determination of the methyl ester of said substance; having ultraviolet absorption spectra as indicated in Fig. 1 (not shown) and an infra-red absorption spectrum as indicated in Fig. 2 (not shown); and giving an Rf value of 0À45 in thin layer chromatography on silica gel with ethyl acetatemethanol (20 : 1 by volume) and an Rf value of 0À23 with chloroform-isopropanol (9:1 by volume) and a pharmaceutically acceptable salt thereof. The substance may be prepared by cultivating a BN-130 substance producing strain of the genus Pseudomonas in a suitable culture medium containing assimilable sources of carbon and nitrogen under aerobic conditions to produce and accumulate BN-130 substances which is then recovered from the culture. The preferred strain is Pseudomonas stutzeri BN-130. The antibiotic substance may be incorporated with a pharmaceutically acceptable carrier into a form suitable for treating bacteria infections in animals.
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