Astrernestin, a novel aurone-phenylpropanoid adduct from the roots of Astragalus ernestii was written by Li, Jin-Qiang;Xiao, Chao-Jiang;Li, Ye-Meng;Tian, Xin-Yan;Dong, Xiang;Jiang, Bei. And the article was included in Natural Product Research in 2020.Electric Literature of C22H22O10 This article mentions the following:
Astragalus ernestii has been used as a substitute for Radix Astragali (Huang-Qi) in southwest China. To better understand the chem. rationale for the medicinal usage, the phytochem. 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 was elucidated by extensive spectroscopic anal. and optical rotation calculation In the experiment, the researchers used many compounds, for example, (2S,3R,4S,5S,6R)-2-(((6aR,12aR)-6a,12a-Dihydro-6H-[1,3]dioxolo[4′,5′:5,6]benzofuro[3,2-c]chromen-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 6807-83-6Electric Literature of C22H22O10).
(2S,3R,4S,5S,6R)-2-(((6aR,12aR)-6a,12a-Dihydro-6H-[1,3]dioxolo[4′,5′:5,6]benzofuro[3,2-c]chromen-3-yl)oxy)-6-(hydroxymethyl)tetrahydro-2H-pyran-3,4,5-triol (cas: 6807-83-6) belongs to benzofurans derivatives. Benzofuran is a core structural unit found in many naturally occurring compounds with multidirectional biological activities. Benzofurans have also made significant and distinctive contributions to biology. They exhibit several biological activities that range from antioxidant, antitubercular, antiplasmodial, insecticidal.Electric Literature of C22H22O10
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem