Complexation-driven assembly of imine-linked helical receptors showing adaptive folding and temperature-dependent guest selection.
Nat Commun
; 15(1): 1501, 2024 Feb 19.
Article
em En
| MEDLINE
| ID: mdl-38374171
ABSTRACT
The development of synthetic receptors capable of selectively binding guests with diverse structures and multiple functional groups poses a significant challenge. Here, we present the efficient assembly of foldamer-based receptors for monosaccharides, utilising the principles of complexation-induced equilibrium shifting and adaptive folding. Diimine 4 can be quantitatively assembled from smaller components when D-galactose is added as a guest among monosaccharides we examined. During this assembly, dual complexation-induced equilibrium shifts toward both the formation of diimine 4 and the conversion of D-galactose into α-D-galactofuranose are observed. Diimine 6 is quantitatively assembled in the presence of two different guests, methyl ß-D-glucopyranoside and methyl ß-D-galactopyranoside, resulting in the formation of two dimeric complexes (6-MP)2â(methyl ß-D-glucopyranoside)2 and (6-MM)2â(methyl ß-D-galactopyranosideâ2H2O)2, respectively. These two complexes exhibit distinct folding structures with domain-swapping cavities depending on the bound guest and temperature. Interestingly, (6-MM)2â(methyl ß-D-galactopyranosideâ2H2O)2 is exclusively formed at lower temperatures, while (6-MP)2â(methyl ß-D-glucopyranoside)2 is only formed at higher temperatures.
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Base de dados:
MEDLINE
Idioma:
En
Ano de publicação:
2024
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Article