Novel heterogeneous aminated polystyrene and polyacrylate resins and vinylpyridine copolymerized with methylmethacrylate and buthylmethacrylate, were synthesized, characterized and used as supports for MTO immobilization. FTIR, UV–VIS, chemical analysis and 13C NMR indicate that tertiary amine ...

The synthesis, characterization, and evaluation of new hybrid polymers towards bisphenol A (BPA) adsorption in aqueous medium were described. Different parameters related to the synthesis, such as catalyst nature, solvent type and the influence of 4-vynilpyridine (4-VP), 3-aminopropyltrimethoxys...

Polyvinylpyridine-N-oxide (PVPNO) and carboxymethyl cellulose (CMC) are known to inhibit the cytotoxic effects of quartz particles and chrysotile asbestos fibers, respectively. The effect of PVPNO and CMC on mineral dust-induced production of reactive oxygen species (ROS) by human monocyte-deriv...

The complex-forming properties of methacrylic acid grafted to cellulose in complexing with polyvinylpyridine N-oxide and Cu2+ ions are studied by potentiometric titration for various contents of methacrylic acid in the copolymer, and different Cu+ ion concentrations. The mean values of the Gibbs...

The effect of polyvinylpyridine N-Oxide and polyvinylpyrrolidone on quartz cytotoxicity was studied in guinea pig macrophages using leakage of acid phosphatase enzyme through the lysosomal membrane as a parameter of the cytotoxicity of quartz dust. The macrophages were either pretreated with the...

Twelve baboons were exposed to a quartz dust cloud. Four of these were also given polyvinylpyridine-N-oxide (PVNO) by aerosol and four received PVNO by aerosol and injection. A prophylactic effect was demonstrated during the course of treatment, but when treatment stopped the silicosis progresse...

We have explored the synthesis of compounds that have good affinity for both μ- and δ-opioid receptors from the (αR,2S,5S) class of diaryldimethylpiperazines. These non-selective compounds were related to opioids that have been found to interact selectively with μ- or δ-opioid receptors as ...

In our pursuit to develop novel non-carbohydrate small molecule Galectin-1 Inhibitors, we have designed a series of 1-benzyl-1H-benzimidazole derivatives and demonstrated their anticancer activity. The compound 6g, 4-(1-benzyl-5-chloro-1H-benzo[d]imidazol-2-yl)-N-(4-hydroxyphenyl) benzamide was ...

The novel title compound 4-chloro-8-methoxyquinoline-2(1H)-one (4CMOQ) has been synthesized by slow evaporation solution growth technique at room temperature. The synthesized 4CMOQ molecule was characterized experimentally by FT-IR, FT-Raman, UV–Vis, NMR and single crystal diffraction (XRD) and...

CuCl/TMEDA-promoted halogen atom transfer radical cyclization (HATRC) of dichloroacetic acid 1-(3-methyl-but-2-enyl)-naphthalen-2-yl ester in refluxing DCE gave chlorine containing 7-member lactone 3-Chloro-2-(1-chloro-1-methyl-ethyl)-2,3-dihydro-1H-naphtho[2,1-b]oxepin-4-one via 7-exo trig radi...

The synthesis of 1H-polychlorofluorocycloolefin by the hydrodehalogenation of perchlorofluorocycloolefin containing –CCl=CCl– or –CCl=CF– group in dimethylformaide (DMF) or dimethylacetamide (DMAC) over Zn was investigated. It was found that the hydrodehalogenation of perchlorofluorocycloole...

A series of new 3-(1H-benzimidazol-2-yl)quinolin-2(1H)-one derivatives (5a1−5d6) were designed and synthesized as antitumor agents. In vitro antitumor assay results showed that some compounds exhibited moderate to high inhibitory activity against HepG2, SK-OV-3, NCI-H460 and BEL-7404 tumor cell ...

A highly efficient method has been developed for the one-pot synthesis of substituted 3-amino-1H-indole and 3-amino-1H-7-azaindole derivatives starting from ethyl 2-cyanophenylcarbamate/ethyl 3-cyanopyridin-2-ylcarbamate, and α-bromoketones in good to excellent yields. All newly synthesized ana...

The asymmetric synthesis of methyl (E)-4-((1R,2S,3R)-3-amino-2-((E)-2-methoxycarbonyl-eten-1-yl)cyclohexyl)but-2-enoate 14 has been achieved from dimethyl (2E,7E)-nona-2,7-dienedioate 2. A key step is the asymmetric synthesis of 1-hydroxyoctahydro-1H-isochromene derivative 5 whose X-ray analysis...

Excellent levels of enantiorecognition are displayed by tert-butyl (RS)-6-n-alkyl-cyclohex-1-ene-carboxylates in mutual kinetic resolutions with lithium (RS)-N-benzyl-N-(α-methylbenzyl)amide. Therefore a 50:50 pseudoenantiomeric mixture of lithium (S)-N-benzyl-N-(α-methylbenzyl)amide and lithi...

The present work reveals the synthesis and antiproliferative effect of a series of 2, 3 disubstituted 4-thiazolidinone analogues on human leukemic cells. The chemical structures of newly synthesized compounds were confirmed by IR, 1H NMR, 13C NMR and mass spectral analysis. Compound methyl 3-met...

The one- and two-dimensional 15N, 13C and 1H NMR spectra of benzenediazonium chloride coupling product with 3-methylquinoxalin-2(1H)-one were measured and analysed. It was convincingly proved that two components of the reaction product obtained by coupling reaction are 3-[(Z)-(2-phenylhydrazinyl...

The drug ibuprofen (IBP) appears frequently in the wastewater discharge from pharmaceutical industries. This paper reports studies in degradation of IBP employing hybrid technique of sono-enzymatic treatment. This paper also establishes synergy between individual mechanisms of enzyme and sonolys...

The activation of potassium persulfate (KPS) by FeII-NTA complex has been investigated to degrade ibuprofen in aqueous solutions under neutral pH conditions. The results showed that ibuprofen degradation by FeII-NTA/KPS process was not successful due to the rapid oxidation of FeII-NTA complex by...

Emerging pollutants appear more frequently in the environment and adverse effects affects not only human health but also the environment. This study evaluated the efficiency of two types of constructed wetlands (CWs) and a 12-unit mesocosm-scale system to remove ibuprofen and caffeine compounds:...