A novel flavonoid, pinocembrin-7-O-[3''-O-galloyl-4'',6''-hexahydroxydiphenoyl]-beta-glucose (1) was isolated from the whole plant of Penthorum chinense P., along with four known compounds, pinocembrin-7-O-beta-glucoside, quercitrin, quercetin-3-O-rhamnoside and gallic acid. The structures were established by spectroscopic analysis.
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Wang et al. (2006) studied this question.
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