60 Trichilia roka (Meliaceae)に含まれる昆虫摂食阻害物質trichilinsの単離,構造と活性について

概要

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The root bark of the East African tree Trichilia roka has yielded a series of new limonoids, the trichilins, which exhibit a broad spectrum insect antifeedant and pesticidal activity against the Southern army-worm, Mexican bean beetle, Tobacco horn-worm and other pest insects. Except for azadirachtin, they are the only compounds which are active against the Southern army-worm. The isolation of various trichilins was only possible after very carefully controlled HPLC. Extensive NMR studies including two-dimentional J resolved techniques clarified assignments of all protons, carbons and the entire structures. Application of a recently found additivity rule in the amplitudes of coupled CD cotton effects was used in assignming the configurations at C-12 in trichilins A and B.
天然有機化合物討論会の論文
1980-09-10