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7 results on '"Lundovskaya, Olga V."'

4. From Specific γ‐CD/[Nb6Cl12(H2O)6]2+ Recognition to Biological Activity Tuning

Author

Ivanov, Anton A., primary, Pozmogova, Tatiana N., additional, Solovieva, Anastasiya O., additional, Frolova, Tatiana S., additional, Sinitsyna, Olga I., additional, Lundovskaya, Olga V., additional, Tsygankova, Alphiya R., additional, Haouas, Mohamed, additional, Landy, David, additional, Benassi, Enrico, additional, Shestopalova, Lidiya V., additional, Falaise, Clément, additional, Cadot, Emmanuel, additional, Shestopalov, Michael A., additional, Abramov, Pavel A., additional, and Sokolov, Maxim N., additional

Published
2020
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6. From Specific γ‐CD/[Nb6Cl12(H2O)6]2+ Recognition to Biological Activity Tuning.

Author

Ivanov, Anton A., Pozmogova, Tatiana N., Solovieva, Anastasiya O., Frolova, Tatiana S., Sinitsyna, Olga I., Lundovskaya, Olga V., Tsygankova, Alphiya R., Haouas, Mohamed, Landy, David, Benassi, Enrico, Shestopalova, Lidiya V., Falaise, Clément, Cadot, Emmanuel, Shestopalov, Michael A., Abramov, Pavel A., and Sokolov, Maxim N.

Subjects
ISOTHERMAL titration calorimetry, AQUEOUS solutions, NUCLEAR magnetic resonance spectroscopy, MOLECULAR association, LEAD titanate, WATER
Abstract

Specific molecular recognition of γ‐cyclodextrin (γ‐CD) by the cationic hexanuclear niobium [Nb6Cl12(H2O)6]2+ cluster complex in aqueous solutions results in a 1:1 supramolecular assembly {[Nb6Cl12(H2O)6]@γ‐CD}2+. NMR spectroscopy, isothermal titration calorimetry (ITC), and ESI‐MS were used to study the interaction between the inorganic cluster and the organic macrocycle. Such molecular association affects the biological activity of [Nb6Cl12(H2O)6]2+, decreasing its cytotoxicity despite enhanced cellular uptake. The 1:1 stoichiometry is maintained in solution over a large window of the reagents' ratio, but crystallization by slow evaporation produces a 1:2 host–guest complex [Nb6Cl12(H2O)6@(γ‐CD)2]Cl2⋅20 H2O featuring the cluster encapsulated between two molecules of γ‐CD. The 1:2 complex was characterized by XRD, elemental analysis, IR spectroscopy, and thermogravimetric analysis (TGA). Quantum chemical calculations were performed to model host–guest interaction. [ABSTRACT FROM AUTHOR]

Published
2020
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7. From Specific γ-CD/[Nb 6 Cl 12 (H 2 O) 6 ] 2+ Recognition to Biological Activity Tuning.

Author

Ivanov AA, Pozmogova TN, Solovieva AO, Frolova TS, Sinitsyna OI, Lundovskaya OV, Tsygankova AR, Haouas M, Landy D, Benassi E, Shestopalova LV, Falaise C, Cadot E, Shestopalov MA, Abramov PA, and Sokolov MN

Subjects
Biological Phenomena, Calorimetry, Magnetic Resonance Spectroscopy, Water chemistry, Niobium chemistry, gamma-Cyclodextrins chemistry
Abstract

Specific molecular recognition of γ-cyclodextrin (γ-CD) by the cationic hexanuclear niobium [Nb 6 Cl 12 (H 2 O) 6 ] 2+ cluster complex in aqueous solutions results in a 1:1 supramolecular assembly {[Nb 6 Cl 12 (H 2 O) 6 ]@γ-CD} 2+ . NMR spectroscopy, isothermal titration calorimetry (ITC), and ESI-MS were used to study the interaction between the inorganic cluster and the organic macrocycle. Such molecular association affects the biological activity of [Nb 6 Cl 12 (H 2 O) 6 ] 2+ , decreasing its cytotoxicity despite enhanced cellular uptake. The 1:1 stoichiometry is maintained in solution over a large window of the reagents' ratio, but crystallization by slow evaporation produces a 1:2 host-guest complex [Nb 6 Cl 12 (H 2 O) 6 @(γ-CD) 2 ]Cl 2 ⋅20 H 2 O featuring the cluster encapsulated between two molecules of γ-CD. The 1:2 complex was characterized by XRD, elemental analysis, IR spectroscopy, and thermogravimetric analysis (TGA). Quantum chemical calculations were performed to model host-guest interaction., (© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)

Published
2020
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