Bratt K, Sunnerheim K, Nordenhem H, Nordlander G, Langström B
Institute of Chemistry, Uppsala University, Sweden.
J Chem Ecol. 2001 Nov;27(11):2253-62. doi: 10.1023/a:1012231020944.
Pine weevils (Hylobius abietis) fed less on bark of lodgepole pine (Pinus contorta) than on bark of Scots pine (P. sylvestris). Two pine weevil antifeedants, ethyl trans-cinnamate and ethyl 2,3-dibromo-3-phenyl-propanoate, were isolated from bark of lodgepole pine. These two compounds significantly reduced pine weevil feeding in a laboratory bioassay. In field assays, the second compound significantly decreased pine weevil damage on planted seedlings. Ethyl 2,3-dibromo-3-phenylpropanoate has not previously been reported as a natural product.
与欧洲赤松(Pinus sylvestris)的树皮相比,云杉八齿小蠹(Hylobius abietis)取食扭叶松(Pinus contorta)树皮的量较少。从扭叶松树皮中分离出两种云杉八齿小蠹拒食剂,反式肉桂酸乙酯和2,3-二溴-3-苯基丙酸乙酯。在实验室生物测定中,这两种化合物显著减少了云杉八齿小蠹的取食。在田间试验中,第二种化合物显著降低了种植幼苗上云杉八齿小蠹造成的损害。2,3-二溴-3-苯基丙酸乙酯以前未作为天然产物被报道过。