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Synthesis of sugars embodying conjugated carbonyl systems and related triazole ...
Xavier, N. M.; Goulart, Margarida; Neves, Ana; Justino, Jorge; Chambert, S.; Rauter, A. P.; Queneau, Y.The synthesis of a series of pyranoid derivatives comprising a conjugated carbonyl function and related triazole derivatives, structurally suitable for bioactivity evaluation, was achieved in few steps starting from readily available carboxymethyl glycoside lactones (CMGL). 3-Enopyranosid-2-uloses were generated by oxidation/elimination of tri-O-acylated 2-hydroxy pyranosides. Subsequent Wittig olefination prov...
Phenolic composition and antioxidant activity of Rocha pear and other pear cult...
Salta, J.; Martins, A.; Santos, R. G.; Neng, N. R.; Nogueira, J. M.; Justino, Jorge; Rauter, A. P.The phenolic profile and the antioxidant activity of Rocha pear, a Portuguese pear cultivar, were determined and compared with the commercially available pear varieties Cornice, Abate, General Leclerc and Passe Crassane. Phenolic composition of the methanolic extracts of these pears was determined by high performance liquid chromatography with diode array detection (HPLC-DAD), while antioxidant activities were ...
Phytochemical profile and anticholinesterase and antimicobial activities of sup...
Silva, Filipa; Martins, A.; Salta, J.; Neng, N. R.; Nogueira, J.; Mira, Delfina; Gaspar, Natália; Justino, Jorge; Grosso, C.; Urieta, J. S.Winter savory Satureja montana is a medicinal herb used in traditional gastronomy for seasoning meats and salads. This study reports a comparison between conventional (hydrodistillation, HID, and Soxhlet extraction, SE) and alternative (supercritical fluid extraction, SFE) extraction methods to assess the best option to obtain bioactive compounds. Two different types of extracts were tested, the volatile (SFE-9...
Alkyl deoxy-arabino-hexopyranosides: synthesis, surface properties, and biologi...
Silva, Filipa; Goulart, Margarida; Justino, Jorge; Neves, Ana; Santos, F.; Caio, J.; Lucas, S.; Newton, A.; Sacoto, D.; Barbosa, E.; Santos, M. S.Octyl and dodecyl glycosides possessing 2-deoxy-arabino-hexopyranoside moieties belonging to the D-and L-series in their alpha- and beta-forms were synthesized by reaction of an acetyl protected glycal with octanol or dodecanol, catalyzed by triphenylphosphine hydrobromide, followed by deprotection. Their surface properties were studied and discussed in terms of the adsorption and aggregation parameters, pC(20)...
Novas perspectivas de utilização para o Coriandrum sativum L.
Delgado, F.M.G.; Ricardo, C.P.; Rauter, A.P.O coentro, Coriandrum sativum L., pertence à família Umbelliferae e, é uma planta, anual aromática, com centro de origem no Norte de África e Ásia ocidental, sendo espontânea em vários países mediterrânicos. É cultivado em Portugal pelo aroma e sabor característico das suas folhas jovens. Estas são caracterizadas par serem ternapinadas e, pela sua utilização quando verdes, em diverso pratos da cozinha regional,...
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