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2011•Journal of Asian Natural Products ResearchRequires access

Three new flavonoid glycosides fromUrena lobata

Lu Jia, A Youmei, Linlin Jing, Sheng-An Zhou, De‐Yun Kong

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Abstract

Three new flavonoid glycosides, kaempferol-3-O-β-D-apiofuranosyl(1 → 2)-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside (1), kaempferol-4'-O-β-D-apiofuranosyl-3-O-β-D-glucopyranosyl-7-O-α-l-rhamnopyranoside (2), and 5,6,7,4'-tetrahydroxy-flavone-6-O-β-D-arabinopyranosyl-7-O-α-L-rhamnopyranoside (3), were isolated from the aerial parts of Urena lobata L., along with 10 known compounds (4-13). Their structures were determined based on spectroscopic methods including 1D and 2D NMR spectroscopy as well as HR-ESI-MS.

About this research paper

What this paper is about

Three new flavonoid glycosides, kaempferol-3-O-β-D-apiofuranosyl(1 → 2)-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside (1), kaempferol-4'-O-β-D-apiofuranosyl-3-O-β-D-glucopyranosyl-7-O-α-l-rhamnopyranoside (2), and 5,6,7,4'-tetrahydroxy-flavone-6-O-β-D-arabinopyranosyl-7-O-α-L-rhamnopyranoside (3), were isolated from the aerial parts of Urena lobata L., along with 10 known compounds (4-13). Their structures were determined based on spectroscopic methods including 1D and 2D NMR spectroscopy as well as HR-ESI-MS.

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Available abstract

Three new flavonoid glycosides, kaempferol-3-O-β-D-apiofuranosyl(1 → 2)-β-D-glucopyranosyl-7-O-α-L-rhamnopyranoside (1), kaempferol-4'-O-β-D-apiofuranosyl-3-O-β-D-glucopyranosyl-7-O-α-l-rhamnopyranoside (2), and 5,6,7,4'-tetrahydroxy-flavone-6-O-β-D-arabinopyranosyl-7-O-α-L-rhamnopyranoside (3), were isolated from the aerial parts of Urena lobata L., along with 10 known compounds (4-13). Their structures were determined based on spectroscopic methods including 1D and 2D NMR spectroscopy as well as HR-ESI-MS.

Key concepts: Glycoside, Kaempferol, Flavonoid, Stereochemistry, Chemistry, Two-dimensional nuclear magnetic resonance spectroscopy, Traditional medicine, Medicine

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