目前在杀虫剂研究中,昆虫拒食剂和生长发育抑制剂受到国内外的重视,已发现的植物拒食剂比较重要的有数十种,其中萜烯类(Ter-penes)化合物最重要,如从非洲藤条木科分离得倍半萜活乐木醛(Warb urganal)及从马鞭草科分离得的二菇Clerodendrin A·B·对斜纹夜蛾具有较强的拒食活性。特别是四环三萜类化合物如印株素(Azadirachtin)、川楝素 At present, insecticides and anti-esophageal agents and growth and development inhibitors have received great attention both at home and abroad. There are dozens of plant antifeedants that have been found to be more important. Among these, terpenes (Ter-penes) are the most important compounds such as Warb urganal and Clerodendrin A · B, the first mushroom isolated from Verbenaceae, were isolated from the African rattanwood family and showed strong antifeeding activity against Spodoptera litura. Especially tetracyclic triterpenoids such as Azadirachtin and Toosendanin