2 documents found, page 1 of 1
Aplicação de técnicas contemporâneas de ressonância magnética nuclear no estudo...
Uchoa, Daniel Esdras de AndradeThe material (root and stem) of Aspidosperma ulei Markgf (Apocinaceae), popularly known as Pitiá, was collected in the locality of Garapa, Acarape County, Ceará. In this work, aliquots of the ethanol extracts of the root and of the stem barks of A. ulei were submitted to chromatographic analysis in sephadex and silica gel , and CLAE, making possible the isolation of the alkaloids (+)-20(S)uleíne (AU-1). (+)-20(...
Glicoalcaloides antifúngicos, flavonoides e outros constituintes químicos de So...
Pinto, Francisco das Chagas L.; Uchoa, Daniel Esdras de Andrade; Silveira, Edilberto Rocha; Pessoa, Otília Deusdênia Loiola; Braz-Filho, RaimundoTwo glycoalkaloids: solamargine and solasonine; three flavonoids: tiliroside, 7-O-α-L-ramnopyranosyl-kaempferol and 3-O-[ß-D-glucopyranosyl-(1→6)-α-L-ramnopyranosyl]-7- O-α-L-ramnopyranosyl-kaempferol, in addition to the tripeptide Leu-Ile-Val, the aminoacid proline and the eicosanoic acid were isolated from Solanum asperum (Solanaceae). The structures of all compounds were determined by interpretation of their...