In the course of our previous work we isolated alkaloids such as agroclavine-I and epoxy-agroclavine-I from Penicillium citrinum VKM FW-800 as a microorganism isolated from permafrost1,2). This fungus was shown to coproduce two other alkaloid compounds, which were extractable only under acidic conditions. Positive staining by Dragendorff's reagent but negative Ehrlich reaction suggested the occ...

The behavior of meso-carbon microbeads in the boiling quinoline was investigated. The meso-carbon microbeads used were of three kinds; Type C, Type M and Type P. These were treated in quinoline at 238 •Ž for 30 min. and the insoluble part was filtered out. This procedure was repeated five times. The amount of quinoline soluble part was measured and the structural characteristics of quinoline in...

The quinoline ring plays an important role in many biological systems. Their chemical Synthesis is flexible, can be easily adapted to prepare new derivatives and rationally devised structures, and hopefully can be a source of useful drugs in future. Anticancer activities have been studied for many quinoline derivatives. It has been known that quinoline derivatives may act as anticancer agents t...

BACKGROUND Quinoline 2-oxidoreductase (Qor) is a member of molybdenum hydroxylase which catalyzes the oxidation of quinoline (2, 3 benzopyridine) to 1-hydro-2-oxoquinoline. Qor has biological and medicinal significances. Qor is known to metabolize drugs produced from quinoline for the treatment of malaria, arthritis, and lupus for many years. However, the mechanistic action by which Qor oxidize...

The effects of prolonged p.o. administration of quinoline or 2-chloroquinoline on rat liver were examined histologically. Hepatocellular carcinomas and hemangioendotheliomas were observed in the livers of rats fed a basal diet containing 0.05, 0.10, or 0.25% quinoline for about 16 to 40 weeks. However, no neoplastic changes were seen in the livers of rats fed a basal diet containing 0.05, 0.10,...

Several bacterial cultures were isolated that are able to degrade quinoline and to transform or to degrade methylquinolines. The degradation of quinoline by strains of Pseudomonas aeruginosa QP and P. putida QP produced hydroxyquinolines, a transient pink compound, and other undetermined products. The quinoline-degrading strains of P. aeruginosa QP and P. putida QP hydroxylated a limited number...

Novel series of quinoline derivatives incorporating cyclopropyl ring and sulfone linkage as substituents have been synthesized, oxidation ethyl-2-cyclopropyl-4-(substituted phenylthio)quinoline-3-carboxylate was carried out to set phenyl sulfonyl)quinoline-3-carboxylate. An ecofriendly synthesis by the reaction glacial acetic acid 30% hydrogen peroxide at room temperature. The synthesized evalu...

The in vitro antimicrobial activity of ciprofloxacin (Bay o 9867) was compared with those of the other new fluorated piperazinyl-substituted quinoline derivatives: norfloxacin, ofloxacin, and pefloxacin, as well as with those of the earlier analogs, nalidixic acid and oxolinic acid. Virtually no resistance against the new fluorated piperazinyl-substituted quinoline derivatives was observed. As ...

A Pseudomonas sp. isolated from sewage by enrichment culture on quinoline metabolized this substrate by a novel pathway involving 8-hydroxycoumarin. During early growth of the organism on quinoline, 2-hydroxyquinoline accumulated as the intermediate; 8-hydroxycoumarin accumulated as the major metabolite on further incubation. 2,8-Dihydroxyquinoline and 2,3-dihydroxyphenylpropionic acid were ide...