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Palladium-catalysed cyclisation of alkenols: Synthesis of oxaheterocycles as core intermediates of natural compounds

Palík, Miroslav; Kožíšek, Jozef; Koóš, Peter; Gracza, Tibor (2014-09)

The study of Pd-catalysed cyclisation reactions of alkenols using different catalytic systems is reported. These transformations affect the stereoselective construction of mono- and/or bicyclic oxaheterocyclic derivatives ...
Comparison of different absorption corrections on the model structure of tetrakis(μ2-acetato)-diaqua-di-copper(II)

Kožíšková, Júlia; Hahn, Friedemann; Richter, Jens; Kožíšek, Jozef (2016-10)

Two different absorption correction methods were compared in order to find out which method is preferable to improve solving and refining a crystal structure. Experiments were performed on the crystal of a tetrakis(μ2-ac ...
Effects of Terminal Substitution and Iron Coordination on Antiproliferative Activity of l‐Proline‐salicylaldehyde–Thiosemicarbazone Hybrids

Milunović, Miljan N. M.; Dobrova, Aliona; Novitchi, Ghenadie; Gligorijević, Nevenka; Radulović, Siniša; Kožíšek, Jozef; Rapta, Peter; Enyedy, Eva A.; Arion, Vladimir B. (2017-11)

A series of five iron(III) complexes, namely [Fe(HL1)Cl2] (1), [Fe(HL2)Cl2]·1.6H2O (2·1.6H2O), [Fe(HL3)(MeOH)Cl2]·0.5H2O (3·0.5H2O), [Fe(HL4)(MeOH)Cl2]·0.5H2O (4·0.5H2O) and [Fe(HL4)(DMF)Cl2]·0.5Et2O·H2O (4′·0.5Et2O·H2O), ...
Quantum-chemical study of molecular structure and relative stability of trans and cis isomers of model anilide derivatives

Cagardová, Denisa; Poliak, Peter; Lukeš, Vladimír (FCHPT STU, 2017-12-29)

Derivatives of anilide were studied systematically by the density functional theory (DFT) using the B3LYP hybrid functional and the 6-311+G(3df,2p) basis set. Characteristic frequencies of N-H and C=O stretching modes for ...
A Switch between Antioxidant and Prooxidant Properties of the Phenolic Compounds Myricetin, Morin, 3′,4′-Dihydroxyflavone, Taxifolin and 4-Hydroxy-Coumarin in the Presence of Copper(II) Ions: A Spectroscopic, Absorption Titration and DNA Damage Study

Jomová, Klaudia; Hudecová, Lenka; Lauro, Peter; Šimunková, Miriama; Alwasel, Saleh H.; Alhazza, Ibrahim M.; Valko, Marián (2019-11)

The beneficial effects of polyphenols, predominantly in the context of oxidative stress-related diseases such as cancer, cardiovascular diseases and neurological conditions including Alzheimer’s and Parkinson’s diseases, ...
Scalable Preparation of Enantioenriched (S)-5-methylhept-2-en-4-one. Synthesis and Aroma Properties of Achiral Analogues Thereof

Puchľová, Eva; Dendys, Michal; Špánik, Ivan; Szolcsányi, Peter (2019-12)

(S)-5-Methylhept-2-en-4-one is a key flavour compound in hazelnuts. We have performed its chiral-pool-based chemoenzymatic synthesis with 39% overall yield (73% ee). The four-step aldol-based sequence avoids the use of ...
Comparison of Different Categories of Slovak Tokaj Wines in Terms of Profiles of Volatile Organic Compounds.

Furdíková, Katarína; Machyňáková, Andrea; Drtilová, Tereza; Špánik, Ivan (2020)

The present work deals with the characterization of volatile organic compounds (VOCs) in wines from the Slovak Tokaj wine region. Studied wine samples were divided into three groups—varietal wines from registered Tokaj ...

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