Phytochemical reinvestigation of Tabebuia argentea leaves and Catalpa bignonioides petioles extracts (Bignoniaceae) allowed to isolate two compounds not described before: one glycosylated lignan and one phenolic glycoside characterized as 5-hydroxysesamin 5-O-β-d-glucopyranosyl-(1 → 2)-[β-d-glucopyranosyl-(1 → 6)]-β-d-glucopyranoside (1) and 1-benzyl-[6-p-hydroxybenzoyl]-β-d-glucopyranosyl-(1 → 3)-β-d-glucopyranoside (2), respectively. Their structural characterization was obtained on the basis of extensive NMR spectral studies. Five known phenolic glycosides along with six flavonol glycosides were also isolated and characterized.
|Autori:||M. Bruzual de Abreu; A. Temraz; A. Vassallo; A. Braca; N. De Tommasi|
|Titolo:||Phenolic glycosides from Tabebuia argentea and Catalpa bignonioides|
|Anno del prodotto:||2014|
|Digital Object Identifier (DOI):||10.1016/j.phytol.2013.10.006|
|Appare nelle tipologie:||1.1 Articolo in rivista|