Camellianoside, a Novel Antioxidant Glycoside from the Leaves of Camellia japonica
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A novel flavonol glycoside named camellianoside and three known flavonol glycosides were isolated from the leaves of <I>Camellia japonica</I>. The structure of camellianoside was established as quercetin-3-<I>O</I>-β-<small>D</small>-xylopyranosyl-(1→3)-<I>O</I>-α-<small>L</small>-rhamnopyranosyl-(1→6)-<I>O</I>-β-<small>D</small>-glucopyranoside by spectroscopic and chemical methods. The antioxidant activities of these glycosides evaluated by the diphenylpicrylhydrazyl (DPPH) radical scavenging reaction was higher than those of <small>L</small>-cysteine and <small>L</small>-ascorbic acid used as the reference antioxidants.
- Agricultural and Biological Chemistry
Agricultural and Biological Chemistry 70(8), 1995-1998, 2006-08-23
Japan Society for Bioscience, Biotechnology, and Agrochemistry