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- W2951512596 abstract "Distylium racemosum (Hamamelidaceae) is a large indeciduous tree distributed over Halla Mountain in Jeju Island, Korea. We are continuously searching for the bioactive compounds applicable as functional cosmetic ingredients from plants in Jeju. 1 From the ethanol extract of D. racemosum branches, we have found inhibition activities on elastase. Elastin degradation by elastase in dermis is associated with aged skinwrinkle. 2 Since no chemical investigation has been reported from the branches of this plant, we have conducted a phytochemical study to identify the active constituents. In this study, we have isolated new dibenzofuran compounds, 2,7-dihydroxy-1,6-dimethoxy-9-methyldibenzofuran (1) and 3,7-dihydroxy-6-methoxy-2,7-dimethyldibenzofuran (2). From the dried D. Recamosum collected in Jeju Island, ethanol extract was prepared. The extract was successively partitioned into hexane, ethyl acetate and n-butanol. The ethyl acetate fraction was further purified by column chromatography over celite, silica gel and Sephadex LH-20 to afford the compounds 1 and 2." @default.
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- W2951512596 date "2009-01-20" @default.
- W2951512596 modified "2023-09-24" @default.
- W2951512596 title "Identification of New Dibenzofurans from Distylium racemosum" @default.
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- W2951512596 doi "https://doi.org/10.5012/bkcs.2009.30.1.261" @default.
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