Discovery of Pesticide Candidates from Natural Plant Products: Semisynthesis and Characterization of Andrographolide-Based Esters and Study of Their Pesticidal Properties and Toxicology
作者:Meng Hao、Haixia Ding、Lulu Li、Min Lv、Hui Xu
DOI:10.1021/acs.jafc.3c06681
日期:2024.3.20
To explore the use of nonfood plant-derived secondary metabolites for plant protection, a series of ester derivatives for controlling the major migratory agricultural pests were obtained by structural modification of andrographolide, a labdane diterpenoid isolated from Andrographis paniculata. Compound Id showed good insecticidal activity against the fall armyworm Spodoptera frugiperda Smith. Compounds
为了探索非食用植物次级代谢产物在植物保护中的应用,通过对穿心莲内酯(一种从穿心莲中分离出的拉丹烷二萜类化合物)进行结构修饰,获得了一系列用于防治主要迁飞性农业害虫的酯衍生物。化合物Id对草地贪夜蛾表现出良好的杀虫活性。化合物IIa (LC 50 :0.382mg/mL)和IIIc (LC 50 :0.563mg/mL)的杀螨活性分别是穿心莲内酯(LC 50 :4.996mg/mL)的13.1和8.9倍,表现出对朱砂叶螨有较强的杀螨和防治作用。针对柑橘蚜(Aphis citricola Van der Goot),化合物IIIc和IVb 的显着杀蚜活性是穿心莲内酯的 3.9 倍和 3.7 倍。还观察到化合物Id对草地贪夜蛾的三种保护酶(超氧化物歧化酶、过氧化物酶和过氧化氢酶)的影响。通过扫描电镜观察经化合物IIa处理的螨虫表皮角质层结构的明显差异。构效关系表明穿心莲内酯的14-酯衍生物表现出
Evaluation of andrographolide-based analogs derived from Andrographis paniculata against Mythimna separata Walker and Tetranychus cinnabarinus Boisduval
To discover new natural-product-based pesticides, we structurally modified andrographolide, a labdane diterpenoid isolated from Andrographis paniculata, and stereoselectively prepared a series of 12α-(substituted)benzylamino-14-deoxyandrographolide derivatives (I-V). Three-dimensional structures of compounds 3c, 3d, IIIa and IIIb were further determined by single-crystal X-ray diffraction. Compounds
Ceric ammonium nitrate facilitates andrographolide-3,19-O-acetal formation with alcohols. Anticancer active derivatives showed good docking scores in in silico.