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2 article(s) from Lebedinskiy, Konstantin

Spatial arrangements of cyclodextrin host–guest complexes in solution studied by ¹³C NMR and molecular modelling

Konstantin Lebedinskiy,
Ivan Barvík,
Zdeněk Tošner,
Ivana Císařová,
Jindřich Jindřich and
Radim Hrdina

Beilstein J. Org. Chem. 2024, 20, 331–335, doi:10.3762/bjoc.20.33

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Figure 1: Model system for the elucidation of the solution state conformations of the host–guest complexes. ¹³...

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Figure 2: 2D ROESY NMR measurements to estimate the depth of the guest molecule 1 (adamantan-2-amine hydrochl...

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Figure 3: Molecular model of the host (α-CD–guest 1 (adamantan-2-amine hydrochloride)) complex. The 3D densit...

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Figure 4: Studied host–guest complexes and splitting of guests’ prochiral carbons in their ¹³C NMR spectra.

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Figure 5: Molecular modelling of the host–guest complexes of compound 4 with α-CD, β-CD and γ-CD.

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Figure 6: X-ray analysis of the α-CD supramolecular capsule with noradamantane-3-methyleneamine (2) as guest ...

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Published 20 Feb 2024

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Preparation of β-cyclodextrin-based dimers with selectively methylated rims and their use for solubilization of tetracene

Konstantin Lebedinskiy,
Volodymyr Lobaz and
Jindřich Jindřich

Beilstein J. Org. Chem. 2022, 18, 1596–1606, doi:10.3762/bjoc.18.170

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Scheme 1: The synthesis of 6^A-azido-6^A-deoxy-per-6-O-tert-butyldimethylsilyl-β-cyclodextrin.

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Scheme 2: The synthesis of β-cyclodextrin dimers with permethylated secondary rims.

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Scheme 3: The synthesis of β-cyclodextrin dimers with permethylated primary rims.

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Figure 1: The fragments of ¹H NOESY NMR spectra of 4 (a), 10 (b), and 9 (c) indicating the interaction betwee...

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Figure 2: The fragment of the ¹H NMR spectrum of compounds 9 (green); 10 (red); 12 (blue) representing the si...

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Figure 3: Other cyclodextrins that were used in the solubilization experiments with tetracene.

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Figure 4: The tetracene UV absorbance dependence on concentration at 476 nm.

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Figure 5: The relative concentrations of tetracene in DMSO solutions with hosts 4, 5, 10, 12, 13–18 referred ...

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Figure 6: "Tail-to-tail" (a) and "head-to-head" (b) orientation of two cyclodextrin moieties and primary-rim ...

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Figure 7: Isotherms of the titration of tetracene with "dimeric" CD solutions in DMSO at 298 K (circles – 10;...

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Figure 8: Isotherms of the titration of tetracene with "monomeric" CD solutions in DMSO at 298 K (circles – 16...

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Published 25 Nov 2022

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Spatial arrangements of cyclodextrin host–guest complexes in solution studied by 13C NMR and molecular modelling

Preparation of β-cyclodextrin-based dimers with selectively methylated rims and their use for solubilization of tetracene

Spatial arrangements of cyclodextrin host–guest complexes in solution studied by ¹³C NMR and molecular modelling