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Pseudopeptidic Cages as Receptors for N-Protected Dipeptides
dc.contributor.author | Faggi, Enrico | |
dc.contributor.author | Moure, Alejandra | |
dc.contributor.author | Bolte, Michael | |
dc.contributor.author | Vicent Barrera, Cristian | |
dc.contributor.author | Luis, Santiago V. | |
dc.contributor.author | Alfonso Rodríguez, Ignacio | |
dc.date.accessioned | 2015-07-16T10:10:30Z | |
dc.date.available | 2015-07-16T10:10:30Z | |
dc.date.issued | 2014-04 | |
dc.identifier.citation | FAGGI, Enrico, et al. Pseudopeptidic Cages as Receptors for N-Protected Dipeptides. The Journal of organic chemistry, 2014, 79.10: 4590-4601. | ca_CA |
dc.identifier.uri | http://hdl.handle.net/10234/127727 | |
dc.description.abstract | The molecular recognition of short peptides is a challenge in supramolecular chemistry, and the use of peptide-like cage receptors represents a promising approach. Here we report the synthesis and characterization of a diverse family of pseudopeptidic macrobicycles, as well as their binding abilities toward N-protected dipeptides using a combination of different techniques (NMR, ESI-MS, and fluorescence spectroscopy). The cage hosts were assayed for dipeptide binding using competition ESI-MS experiments as high-throughput screening to obtain general trends for the recognition phenomena. Selected hosts were additionally studied by NMR spectroscopy (1H NMR titration and diffusion-ordered spectroscopy experiments) in different solvents. The results unambiguously demonstrated the formation of the [cage·dipeptide] supramolecular complexes and rendered quantitative information about the strength of the interaction (Kass). The structural variables within the pseudopeptidic cage framework that produced a stronger and more selective recognition were thus identified. The cages showed a remarkable selectivity for N-protected dipeptides with an aromatic amino acid at the carboxylic terminus, which prompted us to propose a mode of binding based on polar and nonpolar noncovalent interactions. Accordingly, we faced the molecular recognition of a target dipeptide (Ac-EY-OH) mimicking a biologically relevant sequence by NMR and fluorescence spectroscopy in highly competitive media. | ca_CA |
dc.format.extent | 11 p. | ca_CA |
dc.format.mimetype | application/pdf | ca_CA |
dc.language.iso | eng | ca_CA |
dc.publisher | American Chemical Society | ca_CA |
dc.relation.isPartOf | J. Org. Chem., 2014, 79 (10) | ca_CA |
dc.rights | Copyright © 2014 American Chemical Society | ca_CA |
dc.rights.uri | http://rightsstatements.org/vocab/InC/1.0/ | * |
dc.subject | Amino Acids | ca_CA |
dc.subject | Dipeptides | ca_CA |
dc.subject | Fluorescence spectroscopy | ca_CA |
dc.subject | Ions | ca_CA |
dc.subject | Molecular recognition | ca_CA |
dc.subject | Imines | ca_CA |
dc.subject | Macrocyclic Compounds | ca_CA |
dc.title | Pseudopeptidic Cages as Receptors for N-Protected Dipeptides | ca_CA |
dc.type | info:eu-repo/semantics/article | ca_CA |
dc.identifier.doi | http://dx.doi.org/10.1021/jo500629d | |
dc.rights.accessRights | info:eu-repo/semantics/restrictedAccess | ca_CA |
dc.relation.publisherVersion | http://pubs.acs.org/doi/abs/10.1021/jo500629d | ca_CA |
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