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Note | Regular issue | Vol 45, No. 9, 1997, pp.1781-1786
Published online, 1st January, 1970
DOI: 10.3987/COM-97-7831
Antifeeding Limonoids from Melia toosendan

Jian-Bo Zhou, Yuji Minami, Fumio Yagi, Kenjiro Tadera, and Munehiro Nakatani*

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

Abstract

A new limonoid, azedarachin B, with a C-19/C-29 bridged acyl acetal structure was isolated as an insect antifeedant from the root bark of Melia toosendan along with seven known limonoids. The structure of azedarachin B was elucidated by spectroscopic and chemical means and the antifeedant property was also studied.