Structures of Three New Acylated Flavonol Glycosides from Astragalus complanatus R. BR.

Baoliang CUI; Motoyuki NAKAMURA; Junei KINJO; Toshihiro NOHARA

doi:10.1248/cpb.40.1943

Baoliang CUI, Motoyuki NAKAMURA, Junei KINJO, Toshihiro NOHARA

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Keywords: Astragali Semen, Astragalus complanatus, Leguminosae, dihydrophaseic acid, p-coumaric acid, ferulic acid, rhamnocitrin, acylated flavonol glycoside

JOURNAL FREE ACCESS

1992 Volume 40 Issue 7 Pages 1943-1945

DOI https://doi.org/10.1248/cpb.40.1943

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Abstract

Three new acylated flavonol glycosides (1-3) were isolated from Astragali Semen, seeds of Astragalus complanatus R. BR. (leguminosae). The structures of 1, 2 and 3 were elucidated as 3-O-β-D-glucopyranosyl-4'-O-(3‴-O-dihydrophaseoyl-β-D-glucopyranosyl) rhamnocitrin, 3-O-[5‴-O-p-coumaroyl-β-D-apiofuranosyl(1‴→2")-β-D-glucopyranosyl] rhamnocitrin and 3-O-[5'''-O- feruloyl-β-D-apiofuranosyl(1‴→2")-β-D-glucopyranosyl] rhamnocitrin, respectively.

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