1. Insect antifeedants from tropical plants: structures of dumnin and dumsenin
- Author
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Isao Kubo, Hiroshi Furukawa, Motoharu Ju-ichi, Yoshihiro Mine, Yukihiro Asaka, Chihiro Ito, and Ken-ichi Nihei
- Subjects
Limonins ,Circular dichroism ,Insecticides ,Magnetic Resonance Spectroscopy ,Fractionation ,Biology ,Spodoptera ,Moths ,Limonoid ,Mass Spectrometry ,Botany ,medicine ,Animals ,Larva ,Molecular Structure ,Plant Extracts ,Circular Dichroism ,Methanol ,fungi ,General Chemistry ,Nuclear magnetic resonance spectroscopy ,biology.organism_classification ,Fall armyworm ,Croton ,General Agricultural and Biological Sciences ,medicine.drug ,Pink bollworm - Abstract
Two novel A-seco limonoids, dumnin and dumsenin, were isolated from the methanolic extract of Croton jatrophoides by bioassay-guided fractionation, and the structures were determined by nuclear magnetic resonance, circular dichroism, and mass spectrometry experiments. These compounds showed potent antifeedant activity (PC(50)
- Published
- 2004