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Strong complexationof water-solublebetulin derivativeswith(2-hydroxypropyl)-γ-cyclodextrin studiedby affinitycapillary… : научноеиздание Sursyakova V.V.Levdansky V.A.Rubaylo A.I.2019 год

Strong complexation of water-soluble betulin derivatives with (2-hydroxypropyl)-γ-cyclodextrin studied by affinity capillary electrophoresis : научное издание
статья из журнала

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База данных: Каталог библиотеки СФУ
Библиографическое описание: Strong complexation of water-soluble betulin derivatives with (2-hydroxypropyl)-γ-cyclodextrin studied by affinity capillary electrophoresis : научное издание / V. V. Sursyakova, V. A. Levdansky, A. I. Rubaylo. - Текст : непосредственный // Electrophoresis. - 2019. - № . - ISSN 0173-0835. - ISSN 1522-2683.
Аннотация: The complexation between (2-hydroxypropyl)-γ-cyclodextrin (HP-γ-CD) and water-soluble betulin derivatives, betulin 3,28-disulfate (DSB) and betulin 3-acetate-28-sulfate (ASB), belonging to the class of pentacyclic lupane triterpenoids, was studied using mobility shift ACE (ms ACE). It was found that the complexation is a high-affinity interaction. In this case, a very low amount of HP-γ-CD should be added to the BGE, and triangular peaks are observed as a result of ligand deficiency in the sample zone. Le Saux et al. showed in 2005 that using the parameter a1 of the Haarhoff-Van der Linde (HVL) function instead of the migration time measured at the peak apex eliminates the effect of ligand deficiency on effective electrophoretic mobility. Therefore, the electrophoretic mobilities of asymmetrical peaks of DSB and ASB were calculated in this way. The obtained experimental data correspond to 1:1 complexes. The calculated values of binding constants logarithms at 25°C are 6.70 ± 0.05 and 7.03 ± 0.10 for the HP-γ-CD complexes of DSB and ASB, respectively.
Год издания: 2019
Авторы: Sursyakova V.V. , Levdansky V.A. , Rubaylo A.I.
Издательство: Wiley Interscience
Источник: Electrophoresis
Держатель оригинала документа: Federal Research Center “Krasnoyarsk Science Center SB RAS”, Institute of Chemistry and Chemical Technology SB RAS,Federal Research Center “Krasnoyarsk Science Center SB RAS”, Siberian Federal University
Количество экземпляров:
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