S.-Y. Wang, J.-H. Wu, L.-F. Shyur, Y.-H. Kuo, S.-T. Chang
Antioxidant Activity of Abietane-Type
Diterpenes from Heartwood of Taiwania cryptomerioides Hayata
Summary
Nine abietane-type diterpenes were isolated from the heartwood of Taiwania cryptomerioides and
their structures identified by spectral analyses. Among these nine compounds, six diterpenes were
isolated for the first time from T. cryptomerioides, including 6,7-dehydroferruginol, 6?-hydroxysugiol,
5,6-dehydro-6-hydroxysugiol, 11-hydroxyferruginol, secoabietane dialdehyde and isohinokiol.
We suggest that abietane-type diterpenes are the dominant diterpenes in the heartwood of T.
cryptomerioides. A possible biosynthesis pathway is proposed. In addition, a 1,1-diphenyl-2-picrylhydrazyl
(DPPH) assay was performed to evaluate the antioxidant activity of these diterpenes.
This study demonstrates that ferruginol exhibits the strongest antioxidant activity among the
diterpenes isolated from T. cryptomerioides heartwood.
Holzforschung, Walter de Gruyter
Print ISSN: 0018-3830
Volume: 56, 08/2002
Pages: 487 - 492
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