Antifeedant and ovicidal activities of a new cassane and other compounds from Caesalpinia welwitschiana Oliv. and Caesalpinia bonduc L. against Tuta absoluta (Lepidoptera: Gelechiidae)
| Autor: | Alain Tadjong Tcho, Samira A. Mohamed, Silvère Augustin Ngouela, Ahmed Hassanali, Bruno Ndjakou Lenta, Russell J. Cox, Sumesh C. Chhabra, Etienne Tsamo, Flaure Rosette Ehawa Essoung, Brice M. Mba’ning |
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| Rok vydání: | 2020 |
| Předmět: |
Traditional medicine
biology 010405 organic chemistry Chemistry Organic Chemistry Plant Science Gelechiidae biology.organism_classification 01 natural sciences Biochemistry 0104 chemical sciences Analytical Chemistry Lepidoptera genitalia 010404 medicinal & biomolecular chemistry chemistry.chemical_compound Azadirachtin Caesalpinia bonduc Intricatinol Tuta absoluta Caesalpinia |
| Zdroj: | Natural Product Research. 35:5681-5691 |
| ISSN: | 1478-6427 1478-6419 |
| DOI: | 10.1080/14786419.2020.1825424 |
| Popis: | Methanolic extracts of liana of Caesalpinia welwitschiana and leaves of C. bonduc were found to possess moderate antifeedant and ovicidal activities against Tuta absoluta. Bioassay-guided isolation of constituents from the most active fraction of C. welwitschiana led to the identification of four known compounds [isobonducellin 1a and bonducellin 1 b, intricatinol 2, (-)-epigallocatechin-3-O-gallate 4] and one new constituent [welwitschianic acid 3]. The most active fraction of C. bonduc afforded two known constituents neocaesalpin L 5 and neocaesalpin A 6. The isolated structures were elucidated on the basis of their MS, UV, IR and 1 & 2 D NMR spectra and by comparison with literature data. Compounds 2, 4-6 were showed antifeedant and ovicidal properties against T. absoluta, some comparable to that of azadirachtin at 50, 100 and 200 ng/µl. Overall, the present study, conclude that the two species of the plant could be a promising source of eco-friendly botanical constituents. |
| Databáze: | OpenAIRE |
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