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Apigenin Derivatives of Paulownia coreana Uyeki Leaves  

Si, Chuan-Ling (College of Forest Sciences, Kangwon National University)
Kim, Jin-Kyu (College of Forest Sciences, Kangwon National University)
Kwon, Dong-Joo (College of Forest Sciences, Kangwon National University)
Bae, Young-Soo (College of Forest Sciences, Kangwon National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.34, no.2, 2006 , pp. 83-87 More about this Journal
Abstract
The leaves of Paulownia coreana Uyeki were extracted with acetone-$H_2O$ (7:3, v/v), concentrated under reduced pressure and fractionated successively with n-hexane, methylene chloride and ethyl acetate, leaving residual water soluble fraction. A portion of the resulting aqueous soluble powder was chromatographed on a Sephadex LH-20 column using aqueous methanol and ethanol-hexane as washing solvents. Three apigenin derivatives were isolated and identified as apigenin-7-O-${\beta}$-D-glucpyranoside, apigenin-7-O-${\beta}$-D-glucuronopyranoside and apigenin-7-O-[${\beta}$-D-glucuronopyranosyl($1{\rightarrow}2$)-O-${\beta}$-D-glucuronopyranoside] by spectroscopic methods including NMR and FAB-MS.
Keywords
Paulownia coreana Uyeki; column chromatography; apigenin derivatives; apigenin-7-O-${\beta}$-D-glucupyranoside; apigenin-7-O-${\beta}$-D-glucuronopyranoside; apigenin-7-O-[${\beta}$-D-glucuronopyranosyl ($1{\rightarrow}2$)-O-${\beta}$-D-glucuronopyranoside];
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