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Luo Y.,Chinese Academy of Sciences | Luo Y.,Hainan Key Laboratory for Research | Wang H.,Chinese Academy of Sciences | Wang H.,Hainan Key Laboratory for Research | And 6 more authors.
Molecules | Year: 2010

The antioxidant activities of the petroleum ether, ethyl acetate, n-BuOH and water extract fractions from Dracaena cambodiana Pierre ex Gagnep were evaluated in this study. The ethyl acetate fraction contained the highest amount of total phenolics and total flavonoids, and showed the greatest DPPH ., ABTS+ and Superoxide anion radicalscavenging capacities. The DPPH., ABTS+ and Superoxide anion radical-scavenging capacities of nine compounds isolated from the ethyl acetate fraction were also evaluated. The results indicated that these compounds contributed to the antioxidant activity of D. cambodiana. Therefore, D. cambodiana and these compounds might be used as natural antioxidants. © 2010 by the authors; licensee MDPI, Basel, Switzerland.


Mei W.-L.,Institute of Tropical Bioscience and Biotechnology | Mei W.-L.,Hainan Key Laboratory for Research | Luo Y.,Institute of Tropical Bioscience and Biotechnology | Luo Y.,Hainan Key Laboratory for Research | And 8 more authors.
Bulletin of the Korean Chemical Society | Year: 2013

Phytochemical investigation on dragon's blood of Dracaena cambodiana led to the discovery of two new flavonoid derivatives, cambodianin G (1) and cambodianin H (2). Their structures were elucidated on the basis of detailed spectroscopic analysis, including 1D and 2D NMR techniques and chemical methods. The two compounds were observed to exhibit antibacterial activities against Staphylococcus aureus, and compound 1 showed cytotoxicities against K562 and SGC-7901 cell lines.

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