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http://dx.doi.org/10.5660/KJWS.2010.30.3.183

Isolation of a New Herbicidal Compound Angelicin from Curly Dock (Rumex crispus L.)  

Cho, Nam-Kyu (Department of Biological Environment, Kangwon National University)
Lee, Sa-Eun (Department of Biological Environment, Kangwon National University)
Choi, Jung-Sup (Chemical Biotechnology Research Center, Korea Research Institute of Chemical Technology)
Hwang, Ki-Hwan (Moghu Research Center Ltd.)
Koo, Suk-Jin (Moghu Research Center Ltd.)
Wang, Hai-Ying (College of Forestry, Northeast Forestry University)
Kim, Song-Mun (Department of Biological Environment, Kangwon National University)
Publication Information
Korean Journal of Weed Science / v.30, no.3, 2010 , pp. 183-190 More about this Journal
Abstract
The objective of this study was to isolate a herbicidally active compound from curly dock (Rumex crispus), a native weed in Korea and to identify its' chemistry. The $GR_{50}$ value of methanol extracts which is determined by a seed bioassay using rapeseed (Brassica napus) seedlings was $935\;{\mu}g\;g^{-1}$. Activity-directed isolation of ethylacetate extract led to the isolation of ECDA fraction with $GR_{50}$ value $53\;{\mu}g\;g^{-1}$. Based on data of GC-MS, $^1H$-NMR and $^{13}C$-NMR, the chemical structure of ECDA was determined as 2H-furo[2,3-H]-[1]-benzopyran-2-one which is known as angelicin. The $GR_{50}$ values of angelicin to barnyardgrass (Echinochloa crus-galli), southern crabgrass (Digitaria ciliaris), and indian jointvetch (Aeschynomene indica) were 426, 66 and $216\;{\mu}g\;g^{-1}$, respectively. Our results suggest that angelicin could be used as a lead compound for the development of new herbicides.
Keywords
angelicin; curly dock; natural herbicidal compound; Rumex crispus; 2H-furo[2,3-H]-[1]-benzopyran-2-one;
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Times Cited By KSCI : 9  (Citation Analysis)
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