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Note | Regular issue | Vol 75, No. 1, 2008, pp.157-164
Published online, 10th September, 2007
DOI: 10.3987/COM-07-11085
Three Mexicanolides from the Root Bark of Entandrophragma angolense

Nsiama Tienabe Kipassa, Hiroaki Okamura, Matsumi Doe, Yoshiki Morimoto, Tetsuo Iwagawa, and Munehiro Nakatani*

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


Three new mexicanolide-type rings B,D-seco limonoids were isolated together with four known rings B,D-seco compounds, methyl angolensate, secomahoganin, 3β-hydroxy-3-deoxycarapin, and xyloccensin K from the root bark of a meliaceous plant Entandrophragma angolense. The structure of these new compounds was elucidated by spectrospcopic means. The antifeedant property of the isolated compounds is also briefly described.