Growth inhibitory effects on fall armyworm Spodoptera frugiperda of some limonoids isolated from Cedrela spp. (Meliaceae)
Growth inhibitory effects on fall armyworm Spodoptera frugiperda of some limonoids isolated from Cedrela spp. (Meliaceae)
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DOI：
10.1021/jf990443q
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发表时间：
2000-05-01
影响因子：
6.1
通讯作者：
Aranda, E
中科院分区：
文献类型：
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作者：
Céspedes, CL;Calderón, JS;Aranda, E
雪松和雪松的二氯甲烷提取液可得到一种光敏聚醚混合物——雪松素和雪松内酯。研究了这些化合物和23-OH位置的光聚脲酸酯3和4对果夜蛾的抑制作用。以苦楝属植物苦楝素为阳性对照。在无选择生物试验中对新生幼虫的活性进行测试时，皂荚素、光皂荚素外聚物混合物和光皂荚素醋酸酯混合物在7天的LC50分别为39.0、10.0和8.0 ppm，导致幼虫明显死亡，并导致生长减少。与对照相比，所有化合物均以浓度依赖的方式抑制幼虫生长。此外，可以观察到蛹重和成虫羽化显著减少。除雪松烷内酯外，所有被测化合物的活性均与仙丹素相当。
Dichloromethane extracts of Cedrela salvadorensis and Cedrela dugessi afforded a photogedunin epimeric mixture, gedunin and cedrelanolide. These compounds and the photogedunin epimeric acetates 3 and 4 at the 23-OH position were evaluated against Spodoptera frugiperda. Toosendanin, isolated from Melia azedarach, was used as a positive control. When tested for activity on neonate larvae into the no-choice bioassays, gedunin, photogedunin epimeric mixture, and photogedunin acetates mixture caused significant larval mortality with LC50 Of 39.0, 10.0, and 8.0 ppm at 7 days, respectively, as well as growth reduction. All the compounds tested inhibited larval growth, compared to the control, in a concentration-dependent manner. In addition, it was possible to observe significant reduced pupal weights and adult emergence. All the tested compounds except cedrelanolide showed comparable activity to that of toosendanin.