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Synthesis and isomerism of hydrazones of 2-(5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-ylthio)acetohydrazide

100%

Kuodis Z., Rutavičius A., Matijoška A., Eicher-Lorka O.

Open Chemistry

2007

vol. 5

issue 4

996-1006

New hydrazones of 2-(5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-ylthio)acetohydrazide have been obtained and the percentages of anti/syn - conformers were determined. Based on the analyses of 1H NMR spectra, it was concluded that for hydrazones obtained from the 2- hydroxybenzaldehydes and 2’-hydroxycetophenones the ratio between the anti-and syn-conformers depends on the strength of intramolecular hydrogen bond (IMHB) between the nitrogen atom of the imino group and the proton of the 2-hydroxy group. It was shown that increase in IMHB strength results in stabilization of the anti-conformer in solution. [...]

Synthesis and properties of new biotin compounds containing hexyltriethylene glycol chain

88%

Matijoška A., Charkova T., Kuodis Z., Voiciuk V., Eicher-Lorka O.

Open Chemistry

2012

vol. 10

issue 1

113-120

The synthesis of a new halogenide containing hexyltriethylene glycol chain functionalized with biotin is reported. The general possibility of this linker to use as the building block for biotinylated compounds syntheses is demonstrated. Two biotinylated esters with different properties for useful surface modification and as fluorescence probes for proteins marking were synthesized. The properties of mentioned compounds were investigated by using surface plazmon resonance ellypsometry and fluorescence spectroscopy.

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2 Open Chemistry

1 2012

1 2007

2 Eicher-Lorka O.

2 Kuodis Z.

2 Matijoška A.

1 Charkova T.

1 Rutavičius A.

1 Voiciuk V.

Search results

Synthesis and isomerism of hydrazones of 2-(5-thioxo-4,5-dihydro-1,3,4-thiadiazol-2-ylthio)acetohydrazide

Synthesis and properties of new biotin compounds containing hexyltriethylene glycol chain