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The methods of synthesis, modification, and biological activity of 4-quinolones (review)
Data on methods for the construction of the 4-quinolone skeleton and modification of the substituents around it are reviewed. The “structure–activity” relationships of 4-quinolones are examined with
Synthesis and Analgesic Activity of [b]-Annelated 4-Quinolones
Considering the side effects of existing drugs used for pain relief, the search for new analgesics with high efficacy and safety remains relevant. Aseries of
Methyl 3-aroyl-4-oxo-1,4-dihydroquinoline-2-carboxylates: synthesis and molecular and crystal structures
Thermal decarbonylation of methyl 1-aryl-3-(het)aroyl-4,5-dioxo-4,5-dihydro-1H-pyrrole-2-carboxylates afforded 8-substituted methyl 3-(het)aroyl-4-oxo-1,4-dihydroquinoline-2-carboxylates. X-ray
Characteristics of fine gold losses during processing of some copper ores
Gold is often associated with sulfide copper ores. Besides the copper sulfides, gold associates with the pyrite or is dispersed as emulsion within the quartz. Most often only about 50 % of the total
INTERRELATION BETWEEN THE CONSTITUTION OF THE THREE-PHASE FROTH AND THE DENSITY OF THE FLOTATION PULP
constitution of the three-phase froth is decisive for the selectivity of the running flotation process. The influence of the density of the flotation pulp is investigated as on the process of
TECHNOLOGICAL POSSIBILITIES FOR PULP DENSITY ALTERATION AT ELATZITE FLOTATION MILL
The pulp density expressed in percent solids is an important technological factor, depended upon the mineralogical-technological characteristics of the treated ore, the type of the flotation cells
RESEARCH WORK OF THE FOAM REGULATION MECHANISM IN FLOATATION OF CASSITERITE WITH OXYHYDRILLIC COLLECTORS
Effective floatation dressing of cassiterite ore is yet an unsolved problem in the world practice. The main reason for it lies in the low selectivity of division of the cassiterite ore from the rock
Synthesis and antimicrobial activity of methyl esters of 2-(het)arylamino-4-oxo-Z-2-butenoic acids, their structural analogs, and conversion products
Synthesis of a small library of compounds containing an aminovinylketone fragment is described. Results of studying their antibacterial activity against S. aureus ATCC 6538-P and E. coli ATCC 25922
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