3 вынікі
A method for the isolation of sesquiterpenols from the Japanese Cedar, Cryptomeria japonica D. Don by preparative reversed-phase high performance liquid chromatography (RP-HPLC) was established. The preparation of the sesquiterpenols was carried out on a preparative liquid chromatograph with a
Cryptomeria japonica against Acusta despesta. This hexane soluble-fraction was used to isolate and identify two sesquiterpenols, (-)-cubebol and (+)-2,7(14),10-bisabolatrien-1-ol-4-one, as the active compounds. Both compounds strongly inhibited the feeding behavior of A. despesta at 120 microg/cm2
A methanol extract of Cryptomeria japonica completely inhibited feeding by Locusta migratoria. Based on bioassay-guided fractionation, two active terpenols, (+)-ferruginol and (-)-cubebol, were isolated and identified as antifeedants against this insect species. Each compound separately showed weak