Journal List > Nat Prod Sci > v.23(3) > 1060670

Woo, Jung, Lee, Kim, Kim, Jung, An, Ham, Jeon, and Cho: Phytochemical Constituents from the Rhizomes of Osmunda japonica Thunb and Their Anti-oxidant Activity

Abstract

Eleven compounds (1–11) were isolated from the rhizomes of Osmunda japonica, and their structures were elucidated based on1H,13C-NMR and LC-IT-TOF MS data. Of these compounds, all compounds (1 – 11) have been previously reported, although five (6 – 9, 11) have not previously been isolated from this plant. The antioxidant activities of isolated compounds (1 – 11) were measured by DPPH and ABTS assays, and compound 10 showed the high antioxidant activity.

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Fig. 1.
The structures of 1 – 11 isolated from O. japonica.
nps-23-217f1.tif
Table 1.
The antioxidant activities of O. japonica compounds (1 – 11)
Compound IC50 (µM)
DPPH ABTS
1 >1000 >1000
2 >1000 >1000
3 >1000 >1000
4 153.6 ± 4.21 227.7 ± 2.45
5 >1000 >1000
6 >1000 75.6 ± 1.54
7 237.8 ± 6.31 >1000
8 >1000 120 ± 3.72
9 256.3 ± 5.19 >1000
10 9.1 ± 0.14 16.1 ± 1.45
11 92.4 ± 4.52 107.2 ± 6.23
Ascorbic acid 3.9 ± 0.21 14.1 ± 2.80

Each value in the tables is represented as mean ± S.D. (n = 3).

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