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Astrernestin, a novel aurone phenylpropanoid adduct from the roots of Astragalus ernestii
来源:本地   作者:肖朝江   发布时间:2019-05-29 20:40   点击次数:
Abstract: Astragalus ernestii has been used as a substitute for Radix Astragali (Huang-Qi) in southwest China. To better understand the chemical rationale for the medicinal usage, the phytochemistry of A. ernestii was recently studied. As a result, a novel aurone-phenylpropanoid adduct astrernestin (1), together with five known phenoloids calycosin-7-O-β-D-glucopyranoside (2), 4,4′-dimethoxy-3′-hydroxy-7,9′:7′,9-diepoxylignan-3-O-β-D-glucopyranoside (3), syringaresinol-4-O-β-D-monoglucoside (4), hedyotol D 4″-O-β-D-glucopyranoside (5) and trifolirhizin (6), were isolated from the roots of A. ernestii. The structure of compound 1 was elucidated by extensive spectroscopic analysis and optical rotation calculation.(全文链接

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