Novel Diterpenes from the Heartwood of Chamaecyparis obtusa var. formosana

Yueh-Hsiung Kuo; Chia-Hsien Chen; Shih-Chang Chien; Hsiu-Chuan Lin

doi:10.1248/cpb.52.764

Notes

Novel Diterpenes from the Heartwood of Chamaecyparis obtusa var. formosana

Yueh-Hsiung Kuo, Chia-Hsien Chen, Shih-Chang Chien, Hsiu-Chuan Lin

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Keywords: Chamaecyparis obtusa var. formorsana, Cupressaceae, 7(6→2)abeoabietane, 14(8→9)abeoabietane, obtusanal, obtusadione

JOURNAL FREE ACCESS

2004 Volume 52 Issue 6 Pages 764-766

DOI https://doi.org/10.1248/cpb.52.764

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Abstract

Two novel diterpenes, obtusanal B (1) and obtusadione (2), along with obtusanal A (3), obtunone (4), 12-hydroxy-6,7-secoabieta-8,11,13-triene-6,7-dial, 8,12-dihydroxydielmentha-5,9-diene-7,11-dione and myrcene, isolated from the heartwood of Chamaecyparis obtusa var. formosana, were characterized by spectroscopic means, including 2D-NMR techniques. Compounds 1 and 2 are 7(6→2)abeoabietane and 14(8→9)abeoabietane type diterpenes, respectively. Their biosyntheses were proposed.

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