Chemical constituents from the whole plants of Trifolium pratense L was written by Peng, Jing-bo;Yang, Wen-ju;Li, Zhan-lin;Gao, Yin-yin;Hua, Hui-ming. And the article was included in Shenyang Yaoke Daxue Xuebao in 2008.Electric Literature of C22H22O10 This article mentions the following:
The objective of this paper is to study the chem. constituents of dried whole plants of Trifolium pratense L. Compounds were isolated and purified repeatedly by silica gel, Sephadex LH-20 and ODS column chromatog. and preparative TLC, and their chem. structures were elucidated by their physicochem. properties and spectral anal. The results showed that sixteen compounds were obtained and identified as maackiain (1), quercetin (2), pinitol (3), salicylic acid (4), calycosin-7-O-β-D-glucoside (1), formononetin (6), trifolirhizin (7), sissotrin (8), daidzin (9), genistin (10), irilone (11), biochanin A (12), genistein (13), pratensein (14), daidzein (15), and ononin (16). It has been concluded that compounds 3 and 4 are isolated from this plant for the first time. 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 the “”parent”” of many related compounds with more complex structures. For example, psoralen is a benzofuran derivative that occurs in several plants. As benzofurans are prone to undergo ring opening of the heterocycle, examples of reduction of this type of aromatics by using dissolving metals are rather scarce.Electric Literature of C22H22O10
Referemce:
Benzofuran – Wikipedia,
Benzofuran | C8H6O – PubChem