New Limonoids from Melia toosendan.
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.
a Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University.
J B
JB
Zhou
a Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University.
K
K
Tadera
a Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University.
Y
Y
Minami
a Department of Biochemical Science and Technology, Faculty of Agriculture, Kagoshima University.
F
F
Yagi
b Department of Chemistry and Bioscience, Faculty of Science, Kagoshima University.
J
J
Kurawaki
c Kagoshima Prefectural Agricultural Experiment Station.
K
K
Takezaki
b Department of Chemistry and Bioscience, Faculty of Science, Kagoshima University.
M
M
Nakatani
1-O-acetyltrichilin H; Melia toosendan; antifeedant; limonoid; neoazedarachins