Isolation and identification of flavonoids from the roots of Brassica rapa ssp

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Title
Isolation and identification of flavonoids from the roots of Brassica rapa ssp
Author(s)
R H Jeong; Q Wu; J G Cho; D Y Lee; S Shrestha; M H Lee; K T Lee; M S Choi; Tae Sook Jeong; E M Ahn; H G Chung; Y D Rho; N I Baek
Bibliographic Citation
Journal of Applied Biological Chemistry, vol. 56, no. 1, pp. 23-27
Publication Year
2013
Abstract
The roots of Brassica rapa ssp. were extracted with 95% aqueous ethanol and the concentrated extracts were partitioned using ethyl acetate (EtOAc), n-butyl alcohol and H2O, successively. From the EtOAc fraction, five flavonoids were isolated through repeated silica gel and octadecyl silica gel (ODS) column chromatography (c.c.). Based on NMR, mass spectrometry (MS) and IR spectroscopic data, the chemical structures of the compounds were determined to be licochalcone A (1), 4,4'-dihydroxy-3'-methoxychalcone (2), liquirtigenin (3), liquiritin (4), and isoliquiritin (5). This is the first report of these compounds isolated from the root of this plant.
Keyword
4,4'-dihydroxy-3'-methoxy-chalconeBrassica rapa sspIsoliquiritinLicochalcone ALiquiritinLiquirtigenin
ISSN
1229-2737
Publisher
Springer
DOI
http://dx.doi.org/10.3839/jabc.2013.005
Type
Article
Appears in Collections:
Division of Biomaterials Research > Industrial Bio-materials Research Center > 1. Journal Articles
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