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Photorelease of amino acids from novel thioxobenzo[f]benzopyran ester conjugates
Piloto, Ana M.; Soares, Ana M. S.; Costa, Susana P. G.; Gonçalves, M. Sameiro T.Aiming at the enhancement of the performance of (9-methoxy-3-oxo-3H-benzo[f]benzopyran-1-yl) methyl ester as photocleavable protecting group for the carboxylic acid function at long-wavelengths, 9-methoxy-3-thioxo-3H-benzo[f]benzopyran-L-valine and L-phenylalanine model conjugates were prepared through a thionation reaction of the corresponding oxo-benzobenzopyrans. These thioxobenzobenzopyran derivatives were ...
Photolysis at long wavelengths of amino acid ester derivatives based on 4-methy...
Piloto, Ana M.; Soares, Ana M. S.; Hungerford, Graham; Costa, Susana P. G.; Gonçalves, M. Sameiro T.Ester derivatives of fused 4-methyl-6-methoxy-2-oxo-2H- naphtho[1,2-b]pyran, using valine and phenylalanine as model bifunctional molecules were synthesised, to assess its applicability as a photocleavable protecting group, for solution phase organic synthesis and in caging applications, at longer wavelengths. The behaviour of the corresponding derivatives towards photolysis was evaluated by irradiation in mixt...
Bioconjugados fluorescentes : síntese e aplicação em estudos de clivagem foto-i...
Soares, Ana M. S.Dissertação de mestrado em Química Medicinal ; Com o objectivo de desenvolver grupos protectores fotocliváveis para síntese orgânica e também para aplicações caging, baseados em novos derivados fluorescentes policíclicos de oxobenzopirano e oxazole, sintetizaram-se os compostos funcionalizados 4-(clorometil)-6-metoxi-2-oxo-2H-benzo[h]benzopirano, 4-(hidroximetil)-6-metoxi-2-oxo- 2H-benzo[h]benzopirano, 2-(brom...
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