Anti-oxidative Activities of Phenolic Compounds from barks of Pinus densiflora Siebold et Zuccarini

  • Received : 2009.09.29
  • Accepted : 2009.12.23
  • Published : 2010.03.31

Abstract

Phytochemical examination of the barks of Pinus densiflora Siebold et Zuccarini has led to the isolation of one phenylpropanoid, one lignan, one flavonoid, one flavan 3-ol and two procyanidins : 4-O-$\beta$-D-glucopyranosyl-p-coumaric acid (1), 2,3-dihydro-2-(4-methoxy)-7-hydroxy-3-hydroxymethyl-5-(3-hydroxy propyl)-benzofuran 3-O-$\alpha$-D-glucopyranoside (2), taxifolin 3'-O-$\beta$-D-glucopyranoside (3), (+)-catechin (4), procyanidin B1 (5) and epicatechin-($4{\beta}$-8)-catechin-($4{\alpha}$-8)-catechin (6). Among them, Compound 4, 5 and 6 showed potent anti-oxidative activities and these anti-oxidative activities were significantly different compared with ascorbic acid as positive control.

Keywords

References

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