期刊
JOURNAL OF WOOD SCIENCE
卷 48, 期 4, 页码 326-330出版社
SPRINGER-VERLAG TOKYO
DOI: 10.1007/BF00831355
关键词
Chamaecyparis obtusa; Cupressaceae; antifeedant activity; Spodoptera litura; diterpenoid
A novel compound, 8(17),12E,14-labdatrien-19-al (trans-communal), was isolated from ethyl acetate extract of young cones of hinoki (Chamaecyparis obtusa Endl.). The chemical structure of the compound was determined mainly with various nuclear magnetic resonance spectral techniques. Its stereochernistry was determined by derivation to a known compound, trans-communol. In addition to this compound. four known compounds - ferruginol, chamaecydin. 12-hydroxy-6.7-seco-ableta-8,11.13-triene-6,7-dial, and trans-communic acid - were isolated. All isolated compounds were subjected to an antifeedant bioassay against the pest insect Spodoptera litura. Results of the bioassay showed that chamaecydin and 12-hydroxy-6,7-seco-abieta-8,11,13-triene-6,7-dial had antifeedant activity.
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