作者:Labunmi Lajide、Pierre Escoubas、Junya Mizutani
DOI:10.1016/0031-9422(95)92653-p
日期:1995.11
disk bioassay. Bioassay-directed fractionation led to the isolation and identification of six ent-kaurane diterpenes in the hexane extract. Feeding deterrent activity varied significantly with the structures when the compounds were tested at concentrations ranging from 5000 ppm (40 μg cm −2 ) to 100 ppm (0.824 μg cm −2 ). (−)-Kaur-16-en-19-oic acid had the strongest termite antifeedants activity among
摘要 研究了 Aethiopica 果实的己烷提取物和种子的甲醇水溶液提取物对地下白蚁 Reticulitermes speratus 的白蚁拒食活性。1% 的粗提取物在精选滤纸圆盘生物测定中表现出很强的拒食活性。以生物测定为导向的分馏导致在己烷提取物中分离和鉴定了六种 ent-kaurane 二萜。当化合物在 5000 ppm (40 μg cm -2 ) 至 100 ppm (0.824 μg cm -2 ) 的浓度范围内进行测试时,摄食威慑活性随结构而显着变化。(-)-Kaur-16-en-19-oic acid 在分离的 ent-kauranes 中具有最强的白蚁拒食活性。还从种子的含水甲醇提取物中分离出两种酚酰胺和四种木脂酰胺。E -3-(4-羟基-3-甲氧基苯基)- N -2-[4-羟基苯基乙基]2-丙烯酰胺比E -3-(3,4-二羟基苯基)-N -2-[4-羟基苯基乙基]更具