Structure-activity Relationship for the Insect Antifeedant Activity of Benzofuran Derivatives
作者:Masanori MORIMOTO、Masamitsu URAKAWA、Tatsuo FUJITAKA、Koichiro KOMAI
DOI:10.1271/bbb.63.840
日期:1999.1
evaluation of the antifeedant activity of each test compound used the ED50 value based on the dose-response curve that was calculated with the probit method. The 2,3-dihydrobenzofuran derivative, 7-acetyl-4,6-dimethoxy-2-isopropenyl-2,3-dihydrobenzofuran, had an ED50 value of 1.3 μg (5.4×10(-9) mol)/cm(2) against the common cutworm. The introduction of methoxy and acetyl groups increased the insect antifeedant
香豆素(2,3-二氢苯并呋喃)是香附子的次生代谢产物,可抑制多食性昆虫的摄食。该次级代谢产物被认为是莎草科的防御系统之一。已经通过应用叶盘法的普通角虫(斜纹夜蛾(Spodoptera litura F. Noctuidae))的生物测定法研究了许多天然存在的苯并呋喃,它们的取代方式和氧化态不同,它们具有抑制昆虫摄食的能力。每种测试化合物的拒食活性的评估均使用基于Probit方法计算的剂量反应曲线的ED50值。2,3-二氢苯并呋喃衍生物7-乙酰基-4,6-二甲氧基-2-异丙烯基-2,3-二氢苯并呋喃的ED50值为1.3μg(5.4×10(-9)mol)/ cm(2)对抗普通的蠕虫。甲氧基和乙酰基的引入增加了昆虫的拒食活性。此外,随着试验化合物的亲脂性的降低,昆虫的拒食活性增加。