Các hợp chất phenolic glycoside Phân lập từ cây đại cà dược (Brugmansia suaveolens)

Nguyễn Thị Mai, Nguyễn Thị Cúc, Phạm Hải Yến, Bùi Hữu Tài

Abstract


Six phenolic glycosides, kaempferol 3-O-a-L-arabinopyranoside 7-O-a-L-rhamnopyranoside (1), kaempferol 3-O-b-D-glucopyranoside 7-O-a-L-rhamnopyranoside (2), kaempferol 3-O-β-D-glucopyranosyl-(1→2)-β-D-glucopyranoside 7-O-α-L-rhamnopyranoside (3), benzyl-a-L-arabinopyranosyl-(l®6)-b-D-glucopyranoside (4), 2,6-dimethoxy-4-hydroxyphenol 1-O-b-D-xylopyranosyl-(1→6)-b-D-glucopyranoside (5), and 2,6-dimethoxy-4-hydroxyphenol 1-O-β-D-glucopyranoside (6) were isolated from the methanol extract of Brugmansia suaveolens. Their chemical structures were characterized by 1D-, 2D-NMR, ESI-MS spectra, and as well as in comparison with those reported in the literature. This is the first report of these compounds from B. suaveolens.

Keywords


Brugmansia suaveolens, phenolic glycoside, kaempferol.

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