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Paper | Regular issue | Vol 36, No. 4, 1993, pp.725-731
Published online, 1st January, 1970
DOI: 10.3987/COM-92-6194
Structures of Insect Antifeeding Limonoids, Trichilins F and G, from Trichilia roka

Munehiro Nakatani* and Koji Nakanishi

*Department of Chemistry, Faculty of Science, Kagoshima University, 1-21-35 Korimoto, Kagoshima 890-0065, Japan

Abstract

Two new limonoids, trichilins F and G, have been isolated from the root bark of Trichilia roka and identified as antifeedant against some pest insects. Their structures were determined from spectral data and chemical means, in which the treatment of trichilin A with zinc borohydride induced an acyl migration to yield trichilin F.