JBCS

A series of novel N-acylated benzimidazolone derivatives were synthesized, and their antifungal activity, 2D-quantitative structure-activity relationship (2D-QSAR) and potential targets were studied.

Simultaneous classification of type of biodiesels using mid-infrared spectroscopy data and partial least square discriminant analysis (PLS2-DA).

High Performance Liquid Chromatography (HPLC) and UV-Vis spectrophotometric methods were developed and validated for analytical quantification of methotrexate (MTX) loaded in biodegradable microparticles produced by the spray-drying technique.

Chemical structure of the new oral anticoagulant dabigatran etexilate (DAB) and proposed structures of their degradation products.

Comparative analysis of three techniques: localized electrochemical impedance spectroscopy (LEIS), technique of scanning vibrating electrode (SVET) and optical microscopy (OM) applied to the experimental setup carbon steel (base) and carbon steel subjected to tungsten inert gas (TIG) weld. Analysis after 2 h with electrodes electrically connected immersed in NaCl 0.05 mol L^-1.

Determination of phenols in produced water and possible generated by-products formed during photochemical degradation processes by HS-SPME-GC/MS. Optimum experimental conditions enabled degradation of more than 99% of the initial concentrations of the total phenolic components of produced water.

A treatment to remove pesticide from table grapes using ozone gas is presented.

The catalyst bed Ag-Sn/CeO₂ (4%) converts CO and O₂ to CO₂ with 99% conversion efficiency at 100 °C. The electrochemical equations summarize the electron exchange process.

Determination of ergosterol as indicator of fungal contamination and selected mycotoxins was done in several samples of grain products to examine existence of possible correlations between these compounds. Fungi responsible for contamination were also identified.

A new trifunctional sensor, based on a reactive blue 19 and multi-wall carbon nanotube modified glassy carbon electrode (RB-MWCNT-GCE), was constructed. RB-MWCNT-GCE was applied for simultaneous determination of ascorbic acid (AA), levodopa (LD), uric acid (UA), insulin, and acetylsalicylic acid (ASA) in mixture.

A new naphthalene, 8-methoxy-2,7-dihydroxyl-4-(1'-hydroxyl-isopropyl)-6-methyl-1-naphthaldehyde was isolated from the tubers of Kosteletzkya virginica. It was evaluated for its potential in scavenging diphenyl-picryl hydrazyl radical (DPPH•), inhibition of nitric oxide (NO) induced by lipopolysaccharide (LPS), cytotoxic activity against human acute promyelocytic leukemia (HL-60) and human colorectal adenocarcinoma (LOVO) cell lines.

This study aimed to develop a dissolution test for tablets containing albendazole and praziquantel for veterinary use.

Three new chalcones isolated from Desmodium oxyphyllum.

A 2,4,6-trinitrotoluene (TNT)-imprinted polymer was developed via "grafting to" procedure on the magnetic modified surface for selective determination of TNT from water media.

The palladium catalyst supported on agarose-alumina composite and its utilization in the Suzuki reaction have been investigated.

13XKCl molecular sieves catalyzed the peracetylation of carbohydrates. The catalyst is stable, inexpensive, nontoxic, and can be reused for several cycles. Regioselective alcoholysis of peracetylated D-ribonolactone was catalyzed by the lipase B from Candida antarctica (CAL-B).

A method for obtaining biarylic units from tyrosine derivatives via Suzuki-Miyaura cross-coupling using a variety of potassium aryltrifluoroborate salts.

A portable laser-induced fluorescence spectroscopy (LIFS) was used to evaluate the soil organic matter without need for previous sample chemical treatment. The proposed LIFS can be used in precision agriculture.

The (1R,2S,6R)-2-hydroxymethyl-2,6-dimethyl-3-oxabicyclo[4.2.0]octane, commonly known as papayanol, was identified as a male-specific pheromone component for the guava weevil, Conotrachelus psidii. This compound elicited aggregation behavior in adults and was released mainly during the scotophase. Observed amounts ranged up to 500 ng per insect per day.

Chromatogram for the characterization of CoSalen catalyst and hexachlorobenzene in the organic medium.

Validation of a high performance liquid chromatography (HPLC) method for aflatoxins determination in corn arepas commercialized in Manizales, Colombia.

Caesalpinioflavone, a novel biflavonoid isolated from Caesalpinia pluviosa var. peltophoroides, displays antitumor potential against A549, MCF7, Hs578T and HTC cell lines.

The synthesis of alkylseleno carbohydrates starting from different sugar scaffolds is described. The synthesized molecules had their antioxidant activity profile evaluated and promising results were found for one of the synthesized compounds.

Short and efficient synthesis of 2',3'-didehydro-2',3'-dideoxy-2'-(2''-(trimethylsilyl)ethylthio)thymidine which allows the preparation of diverse potentially antiviral and/or anticancer nucleosides.

Computational chemistry and collision-induced dissociation analysis of brevianamide A and C allow discrimination between isomeric cyclic peptides isolated from Penicillium brevicompactum and sheds light on diketopiperazine fragmentation mechanisms.