Antioxidative Activities of Phenolic Compounds Isolated from Inonotus obliquus
2007
Kim, H.J. (Korea Institute of Science and Technology, Seoul, Republic of Korea) | Jin, C.B. (Korea Institute of Science and Technology, Seoul, Republic of Korea) | Lee, Y.S. (Kyung Hee University, Seoul, Republic of Korea), E-mail: [email protected]
In our continued search for biologically active compounds from traditional medicine, we found that ethyl acetate fraction from Inonotus obliquus showed potent antioxidant activities on three different cell-free bioassay systems. Bioassay-directed chromatographic fractionation of the ethyl acetate fraction from Inonotus obliquus afforded four phenolic compounds, 4-(3,4-dihydroxyphenyl)-(E)-3-buten-2-one (1), 3,4-dihydroxybenzaldehyde (2), protocatechuic acid (3) and caffeic acid (4) along with three sterols such as lanosterol (5), ergosterol peroxide (6) and 9,11-dehydroergosterol peroxide (7).
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