Constituents of leaves of phellodendron japonicum MAXIM. and their antioxidant activity

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Abstract

Three new flavonoid derivatives, 6‴-O-acetyl amurensin (1), 6‴-O-acetyl phellamurin (3) and (2R)-phellodensin-F (5), together with thirty known compounds have been isolated from the leaves of Phellodendron japonicum MAXIM. Their structures were established by means of spectroscopic analysis, including extensive 2D NMR and Mass spectra. The known compounds were identified by comparison with published physical and spectral data. The isolated compounds were screened for their in vitro antioxidant activity through DPPH (1,1-diphenyl-2-picrylhydrazyl) radical scavenging assay. Compounds quercetin and phellodenin-A demonstrated significant radical scavenging activity. © 2005 Pharmaceutical Society of Japan.

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Chiu, C. Y., Li, C. Y., Chiu, C. C., Niwa, M., Kitanaka, S., Damu, A. G., … Wu, T. S. (2005). Constituents of leaves of phellodendron japonicum MAXIM. and their antioxidant activity. Chemical and Pharmaceutical Bulletin, 53(9), 1118–1121. https://doi.org/10.1248/cpb.53.1118

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