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New Limonoids from Melia toosendan
J B Zhou1, K Tadera1, Y Minami1
1a Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University.
Abstract:
The root bark of Melia toosendan afforded four new limonoids with a C-19/C-29 bridged acetal structure, together with two known limonoids, 12α-hydroxyamoorastatone and its 12-acetate. The new compounds were elucidated as 1-O-acetyltrichilin H and 29-O-substituted amoorastatone derivatives, named neoazedarachins A, B and D, by spectroscopic and chemical means. Their antifeedant activity was also studied.
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