| Autor: |
Bin, Yan-Lin, Liu, Shun-Zhi, Xie, Ting-Ting, Feng, Wen-Zheng, Li, Hao-Yang, Ye, Zi-Jia, Dong, Zhi-Hao, Qiu, Ying-Kun |
| Předmět: |
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| Zdroj: |
Natural Product Research; 2023, Vol. 37 Issue 19, p3276-3282, 7p |
| Abstrakt: |
In this study, three new compounds, roxburic acid A (1) and two flavone glycosides isorhamnetin-3-O-α-L-rhamnosyl-(1→6)-β-D-glucopyranose-(1→3)-β-D-glucopyranoside (2), and kaempferol-7-O-β-D-glucopyranosyl-(1→3)-β-D-glucopyranoside (3) were isolated from an ethanol extract of the fresh Anoectochilus roxburghii (Wall.) Lindl., together with 10 known compounds (4-13). The structures of these compounds were comprehensively characterized by HR-ESI-MS, 1H NMR, 13C NMR, and 2 D-NMR. The DPPH free radical scavenging activity of the isolated compounds was evaluated, and the results showed that kaempferol-7-O-β-D-glucopyranosyl- (1→3) -β-D-glucopyranoside (3) and rutin (11) has the potential antioxidant activity with IC50 values of 139 μg/mL and 22.5 μg/mL respectively. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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