Utilize este identificador para referenciar este registo: http://hdl.handle.net/1822/48099

TítuloSynthesis and preliminary biological evaluation of new phenolic and catecholic dehydroamino acid derivatives
Autor(es)Monteiro, Luís S.
Oliveira, Sandra
Paiva-Martins, Fátima
Ferreira, Paula M. T.
Pereira, David M.
Andrade, Paula B.
Valentão, P.
Palavras-chaveCatechol
Dehydroamino acids
tert-Butyloxycarbonylation
Dehydration
Cell viability studies
Data14-Set-2017
EditoraElsevier
RevistaTetrahedron
CitaçãoLuís S. Monteiro, Sandra Oliveira, Fátima Paiva-Martins, Paula M.T. Ferreira, David M. Pereira, Paula B. Andrade, Patrícia Valentão, Tetrahedron 73 (2017) 6199e6209
Resumo(s)A library of N-phenolic and N-catecholic dehydroamino acid derivatives was prepared using an innovative synthetic strategy that involves mild reaction conditions and simple work-up procedures. The method comprises coupling of phenolic or catecholic acids with β-hydroxyamino acids followed by tert-butyloxycarbonylation of all hydroxyl groups using tert-butyldicarbonate and 4-dimethylaminopyridine as catalyst. Treatment of these amino acids with N,N,N’,N’-tetramethylguanidine affords the corresponding O-tert-butyloxycarbonyldehydro-amino acid derivative. Deprotection of the aromatic hydroxyl groups is carried out with trifluoroacetic acid. This synthetic strategy can be applied in a one-pot procedure and yields compounds that can be easily inserted into peptides or other biomolecules after cleavage of the C-protecting group. Preliminary studies of cell viability show that these new compounds display very low or no toxicity. These dehydroamino acids with a phenolic or catecholic moiety can have intrinsic biological activity or used to prepare new hydrogels that mimic mussel adhesive proteins.
Tipoarticle
URIhttp://hdl.handle.net/1822/48099
DOI10.1016/j.tet.2017.09.012
ISSN0040-4020
Arbitragem científicayes
AcessoopenAccess
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