Ellagic acid rhamnosides from the stem bark of Eucalyptus globulus

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Title
Ellagic acid rhamnosides from the stem bark of Eucalyptus globulus
Author(s)
Jong Pyung Kim; In Kyoung Lee; Bong Sik Yun; Sung Hyun Chung; Gyu Seop Shim; Hiroyuki Koshino; Ick Dong Yoo
Bibliographic Citation
Phytochemistry, vol. 57, no. 4, pp. 587-591
Publication Year
2001
Abstract
Four ellagic acid rhamnosides were isolated from the stem bark of Eucalyptus globulus. Their structures have been established on the basis of the analysis of their 1H NMR, 13C NMR, HMBC, IR and MS spectral data. The HMBC data of these compounds were most useful for their structure determinations, with these bring determined to be 3-O-methylellagic acid 3′-O-α-rhamnopyranoside, 3-O-methylellagic acid 3′-O-α-3″-O-acetylrhamnopyranoside, 3-O-methylellagic acid 3′-O-α-2″-O-acetylrhamnopyranoside, 3-O-methylellagic acid 3′-O-α-4″-O-acetylrhamnopyranoside, respectively. Their antioxidant activities were evaluated by measuring the inhibition of lipid peroxidation using rat liver microsomes, with IC50 values of 10.0-14.0 μg/ml.
Keyword
eucalyptus globulusmyrtaceaestem barkellagic acid rhamnosidesantioxidant activity
ISSN
0031-9422
Publisher
Elsevier
DOI
http://dx.doi.org/10.1016/S0031-9422(01)00146-7
Type
Article
Appears in Collections:
Ochang Branch Institute > Natural Medicine Research Center > 1. Journal Articles
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