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1
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Polish Journal of Chemistry
EN A series of novel anthracenedione analogs with various hetero- or carbocyclic ring(s) incorporated into the chromophore has been synthesized. These compounds may constitute a new class of anthracenedione agents with potential ability to overcomemultidrug resistance of cancer cells.
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Bulletin of the Polish Academy of Sciences. Chemistry
EN The reaction of 3-chloro-5,6-diphenylpyridazine-4-carbonitrile ( 4) with ethyl glycinate in DMF/K2CO3 gave the ester derivative 8, which underwent ring closure using ethoxide solution to give ethyl 5-amino-3,4-diphenyl-7-(H)-pyrrolo[2,3-c] pyridazine 6-carboxylate 9. This upon heating with formamide[...]
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Bulletin of the Polish Academy of Sciences. Chemistry
EN A series of regioisomers of 4,5-dihydroisoxazolecarboxylates have been synthesized in the 1,3-dipolar intermolecular cycloaddition and subjected to enzymatic hydrolysis by o:-chymotrypsin from bovine pancreas ( type II) and to micro bial hydrolysis by an Aspergillus niger fungus. For some compounds [...]
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Polish Journal of Chemistry
2006 Vol. 80, nr 9 1503-1511
EN Two series of novel 4-chloro-5-methyl-2-(R-thio)-N-(2,3-dihydro-1,3,4-thiadiazol-2- ylidene)benzenesulfonamide derivatives 5-14 were synthesized by the reaction of potassium 6-chloro-1,1-dioxo-7-methyl-1,4,2-benzodithiazine-3-thiolate (1) or 6-chloro-3- mercapto-7-methyl-1,4,2-benzodithiazine 1,1-di[...]
5
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Materials Science Poland
2011 Vol. 29, No. 2 158--164
EN A new jar-like ZnO structure was synthesized by heating a mixture of Zn and InI3 powder with a weight ratio of 4:1 dispersed on Si wafer at 450 °C in air. The diameter of the jar was of the order of 15 ?m and the length of 20 ?m. The formation of a molten InI3 drop, coating the drop with Zn powders,[...]
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Materials Science Poland
EN Hydroxyapatite was synthesized by the wet chemical technique. Diammonium hydrogen phosphate and calcium nitrate 4-hydrate were used as starting materials and sodium hydroxide solution was used as the agent for pH adjustment. The powder sample was characterized by the commonly used bulk techniques of[...]
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Fundamenta Informaticae
EN We address the problem of the automatic synthesis of concurrent programs within a framework based on Answer Set Programming (ASP). Every concurrent program to be synthesized is specified by providing both the behavioural and the structural properties it should satisfy. Behavioural properties, such a[...]
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Fundamenta Informaticae
EN We consider the realization of Boolean functions by combinatorial circuits with unreliable gates computing the functions from a complete final basis B. We assume that all gates of the basis can have inverse faults on the outputs independently with probability ε(ε∈(0,1/2). We des[...]
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Polish Journal of Chemistry
2009 Vol. 83, nr 11 1929-1936
EN The complex of dinuclear palladium(II), [Pd2(C7H4NS2)4]źC2H5OH, has been synthe - sized and characterized by elemental analysis, IR, UV-Vis spectra, X-ray single crystal diffraction and density functional theory (DFT) calculations. The structure of [Pd2(C7H4NS2)4]źC2H5OH consists of binuclear units [...]
10
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Polish Journal of Chemistry
2009 Vol. 83, nr 7 1317-1322
EN A method of synthesis of trisodium (R)-homocitrate starting from citric acid is reported. The procedure af fords the final product of high optical purity with satisfactory yield.
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Przemysł Chemiczny
2002 T. 81, nr 5 294-299
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Przemysł Chemiczny
2002 T. 81, nr 4 237-240
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Polish Journal of Chemistry
2007 Vol. 81, nr 8 1381-1401
EN A series of novel complexes of 4-amino-5-benzyl-4H-1,2,4-triazole-3-thione (ABT), 5-benzyl-4-(benzylideneamino)-4H-1,2,4-triazole-3-thione (BBT), 5-benzyl-4-[(2- hydroxybenzylidene)amino]-4H-1,2,4-triazole-3-thione (HBHT) and 5-benzyl-4-[(4- methoxybenzylidene)amino]-4H-1,2,4-triazole-3-thione (BMT)[...]
14
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Polish Journal of Chemistry
2007 Vol. 81, nr 8 1419-1426
EN Several 2-(4-chloro-2-mercapto-5-R-benzenesulfonyl)-3,4-dihydroxy-1,1-dioxo-2H- 1,2,4,6-thiatriazines (9–12) have been synthesized as potential anti-HIV (9–10) or anticancer (11–12) agents. The in vitro anti-HIV or antitumor activities were tested at theUSNational Cancer Institute (Bethesda,MD), and[...]
15
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Polish Journal of Chemistry
2007 Vol. 81, nr 8 1433-1440
EN The synthesis of S-(5-chloro-4-methyl-2-sulfamoylphenyl) N-(phenylsulfonyl)benzothiohydrazonates 4a–k is described. The compounds 4b–f and 4j–k were screened at the US National Cancer Institute for their in vitro activities against a panel of 53–57 human tumor cell lines and relationship between str[...]
16
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Polish Journal of Chemistry
2007 Vol. 81, nr 10 1785-1793
EN Novel complexes obtained by reaction of [5-phenyl[1,3,4]thiadiazol-2-yl]azo-4- resorcinol (L1) and [5-phenyl[1,3,4]thiadiazol-2-yl]azo- -naphthol (L2) with Co(II), Ni(II) and Cu(II) have been synthesized and characterized by elemental analysis, molar conductance, electronic, IR and TGA studies as we[...]
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Przemysł Chemiczny
18
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Polish Journal of Chemistry
EN Transition metal complexes of 5,10,15,20-tetra-(4-decanoyloxyphenyl)porphyrin TDPPM [M = Mn, Fe, Co, Ni, Cu, Zn; TDPPH2 = 5,10,15,20-tetra-(4-decanoyloxyphenyl)porphyrin] have been synthesized and characterized by UV-Vis, IR photoacoustic, 1HNMR spectroscopy, elemental analyses, molar conductivity a[...]
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Polish Journal of Chemistry
EN The synthesis of 4-chloro-2-mercapto-N-(1,5-dimethyl- or 1-alkyl-1,4,5,6-tetrahydro- 1,2,4-triazin-3-yl)benzenesulfonamides 15-28 is described. Suggested mechanism of the investigated reaction is discussed. The compounds 15-17 and 19 were tested for their in vitro anti-HIV potency at the National Ca[...]
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Bulletin of the Polish Academy of Sciences. Technical Sciences
EN The paper deals wit h linear circuits synthesis wit h periodic parameters. It was proved that the time-varying voltages and currents of inner branches of such circuits can be calculated using linear recursive equations wit h periodic coefficients if signals on port are given. The stability theorem o[...]
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