Publication details

Adamantane-Substituted Purine Nucleosides: Synthesis, Host-Guest Complexes with beta-Cyclodextrin and Biological Activity

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Authors

RUDOLFOVÁ Jana KRYŠTOF Vladimir NEČAS Marek VICHA Robert ROUCHAL Michal

Year of publication 2022
Type Article in Periodical
Magazine / Source International Journal of Molecular Sciences
MU Faculty or unit

Faculty of Science

Citation
Web https://www.mdpi.com/1422-0067/23/23/15143
Doi http://dx.doi.org/10.3390/ijms232315143
Keywords adamantane; purine; nucleoside; glycosylation; beta-cyclodextrin; antiproliferative activity
Description Purine nucleosides represent an interesting group of nitrogen heterocycles, showing a wide range of biological effects. In this study, we designed and synthesized a series of 6,9-disubstituted and 2,6,9-trisubstituted purine ribonucleosides via consecutive nucleophilic aromatic substitution, glycosylation, and deprotection of the ribofuranose unit. We prepared eight new purine nucleosides bearing unique adamantylated aromatic amines at position 6. Additionally, the ability of the synthesized purine nucleosides to form stable host–guest complexes with ß-cyclodextrin (ß-CD) was confirmed using nuclear magnetic resonance (NMR) and mass spectrometry (ESI-MS) experiments. The in vitro antiproliferative activity of purine nucleosides and their equimolar mixtures with ß-CD was tested against two types of human tumor cell line. Six adamantane-based purine nucleosides showed an antiproliferative activity in the micromolar range. Moreover, their effect was only slightly suppressed by the presence of ß-CD, which was probably due to the competitive binding of the corresponding purine nucleoside inside the ß-CD cavity.
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