Cassane Diterpenoids from the Aerial Parts of Caesalpinia pulcherrima and Their Antifeedant and Insecticidal Activities against Mythimna separate and Plutella xylostella

2020 ◽  
Vol 68 (14) ◽  
pp. 4227-4236
Author(s):  
Chun-Huan Li ◽  
Jia-Yao Zhang ◽  
Thi Mai Luong Tuong ◽  
Yao Liu ◽  
Xuan Nien Hoang ◽  
...  
Keyword(s):  
Plutella Xylostella ◽  
Aerial Parts ◽  
Mythimna Separate ◽  
Insecticidal Activities

Chemical Composition and Insecticidal Activities of the Essential Oil from Caryopteris incana (Thunb. ex Hout.) Miq. Aerial Parts

2020 ◽  
Vol 23 (3) ◽  
pp. 608-615
Author(s):  
Guo Wei Gao ◽  
Zhe Yin ◽  
Zheng Rong Hou ◽  
Jin Ping Li ◽  
Bei Bei Sun ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Aerial Parts ◽  
Insecticidal Activities

scholarly journals The Correlation of the Presence and Expression Levels of cry Genes with the Insecticidal Activities against Plutella xylostella for Bacillus thuringiensis Strains

Toxins ◽  
2014 ◽  
Vol 6 (8) ◽  
pp. 2453-2470 ◽  
Author(s):  
Ming-Lun Chen ◽  
Pin-Hsin Chen ◽  
Jen-Chieh Pang ◽  
Chia-Wei Lin ◽  
Chin-Fa Hwang ◽  
...  
Keyword(s):  
Bacillus Thuringiensis ◽  
Plutella Xylostella ◽  
Cry Genes ◽  
Expression Levels ◽  
Insecticidal Activities

scholarly journals Semisynthesis of some matrine ether derivatives as insecticidal agents

RSC Advances ◽  
2017 ◽  
Vol 7 (26) ◽  
pp. 15997-16004 ◽  
Author(s):  
Jiu-Lin Huang ◽  
Min Lv ◽  
Hui Xu
Keyword(s):  
Plutella Xylostella ◽  
Mythimna Separata ◽  
Insecticidal Activities

Compounds 4i and 4k exhibited more potent insecticidal activities than matrine against Plutella xylostella and Mythimna separata. These matrine derivatives may be considered as promising insecticidal candidates.

scholarly journals Design, Synthesis, and Biological Activities of Novel 1,3,5-Trimethylpyrazole-Containing Malonamide Derivatives

Molecules ◽  
2019 ◽  
Vol 24 (3) ◽  
pp. 562 ◽  
Author(s):  
Qi-Bo Li ◽  
Min Liao ◽  
Qing Liu ◽  
Tong Feng ◽  
Zhi-Yuan Xu ◽  
...  
Keyword(s):  
Plutella Xylostella ◽  
Mass Spectra ◽  
Biological Activities ◽  
Aphis Craccivora ◽  
Moderate Activity ◽  
Tetranychus Cinnabarinus ◽  
Substitution Pattern ◽  
Design Synthesis ◽  
Structural Modifications ◽  
Insecticidal Activities

New 1,3,5-trimethylpyrazole-containing malonamide derivatives based on pyflubumide were designed, synthesized, and characterized using 1H-NMR, 13C-NMR, and high-resolution mass spectra (HRMS). The results of preliminary bioassays showed that the target compounds possessed good activities against Tetranychus cinnabarinus, Plutella xylostella, and Aphis craccivora. Most of the target compounds exhibited moderate to good acaricidal activity against Tetranychus cinnabarinus at a concentration of 400 µg/mL, and some showed moderate activity at a concentration of 200 µg/mL; in particular, compounds 8m and 8p exhibited 70.0% mortality. In addition, some of the target compounds exhibited good insecticidal activities against Plutella xylostella at a concentration of 200 µg/mL, especially compounds 8i and 8o, which achieved 100.0% mortality at a concentration of 100 µg/mL. Interestingly, some of the target compounds exhibited potent anti-aphid activity against Aphis craccivora at a concentration of 200 µg/mL; furthermore, compounds 8p and 8q demonstrated 100.0% anti-aphid activity at a concentration of 50 µg/mL. The preliminary analyses of the structure–activity relationships (SAR) indicated that the acaricidal and insecticidal activities varied significantly depending on the type of substituent and substitution pattern, which provides guidance for the further investigation of such structural modifications.

Tetrafluorobenzyl Alcohol-Oriented Novel (S)-Enantiomeric Esters: Synthesis and Structure-Activity Relationship

2019 ◽  
Vol 15 (1) ◽  
pp. 98-102
Author(s):  
Wenda Wang ◽  
Haihuan Su ◽  
Huangyong Li ◽  
Xiufang Cao
Keyword(s):  
Asymmetric Synthesis ◽  
Insect Resistance ◽  
Insecticidal Activity ◽  
Plutella Xylostella ◽  
The Novel ◽  
Lead Compound ◽  
Tolerance Development ◽  
Structure Activity ◽  
Stereoselective Method ◽  
Insecticidal Activities

Background: Using constantly and widely chemistry insecticides has resulted in a selection burden and favored tolerance development in various insect species. Particularly, pyrethroids are the only one which can be used for net impregnation either ITNs or LLIN as yet, however, the excessive use of pyrethroids has led to many cases of insect resistance in worldwide. Therefore, it is urgent to develop novel insecticides fighting against this sort of resistance. Methods: Based on the preliminary studies, we explored a straightforward highly stereoselective method to achieve the novel chiral ester derivatives by using Oppolzer’s 10,2-camphorsultam as chiral controlling reagent. Results: A series of tetrafluorobenzyl alcohol oriented (S)-enantiomeric esters were designed and synthesized by the asymmetric synthesis. All the compounds exhibited moderate yields, and the original synthesized compounds have been evaluated for their potential insecticidal activity against Plutella xylostella compared with those of fenvalerate and D-trans-phenothrin, and some compounds presented excellent insecticidal activities. Conclusion: The bioassay illustrated that some of the compounds exhibit obviously insecticidal activities against Plutella xylostella, especially, the insecticidal activity of compound 5i was as good as commercial fenvalerate and D-trans-phenothrin, which can be used as a lead compound for further optimization.

scholarly journals GC-MS Analysis of Insecticidal Essential Oil of Aerial Parts ofEchinops latifoliusTausch

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Xin Chao Liu ◽  
Xianghong Hao ◽  
Ligang Zhou ◽  
Zhi Long Liu
Keyword(s):  
Chemical Composition ◽  
Essential Oil ◽  
Gas Chromatography Mass Spectrometry ◽  
Contact Toxicity ◽  
Fumigant Toxicity ◽  
Flowering Stage ◽  
Aerial Parts ◽  
Natural Insecticide ◽  
First Time ◽  
Insecticidal Activities

The roots ofEchinops latifoliusTausch (Asteraceae) have been used in the traditional medicine. However, no report on chemical composition and insecticidal activities of the essential oil of this plant exists. The aim of this research was to determine chemical composition and insecticidal activities of the essential oil ofE. latifoliusaerial parts against maize weevils (Sitophilus zeamaisMotschulsky) for the first time. Essential oil ofE. latifoliusaerial parts at flowering stage was obtained by hydrodistillation and analyzed by gas chromatography-mass spectrometry (GC-MS). A total of 35 components of the essential oil ofE. latifoliusaerial parts were identified. The major compounds in the essential oil were 1,8-cineole (19.63%), (Z)-β-ocimene (18.44%), andβ-pinene (15.56%) followed byβ-myrcene (4.75%) and carvone (4.39%). The essential oil ofE. latifoliuspossessed contact toxicity againstS. zeamaiswith an LD50value of 36.40 µg/adult. The essential oil also exhibited fumigant toxicity againstS. zeamaiswith an LC50value of 9.98 mg/L. The study indicates that the essential oil ofE. latifoliusaerial parts has a potential for development into a natural insecticide/fumigant for control of insects in stored grains.

Insecticidal activities of tea saponin against diamondback moth, Plutella xylostella and aphid, Aphis craccivora

Toxin Reviews ◽  
2017 ◽  
Vol 37 (1) ◽  
pp. 52-55 ◽  
Author(s):  
Shudh Kirti Dolma ◽  
Eshita Sharma ◽  
Ashu Gulati ◽  
S.G. Eswara Reddy
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Aphis Craccivora ◽  
Tea Saponin ◽  
Insecticidal Activities
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