Journal
CHEMICAL & PHARMACEUTICAL BULLETIN
Volume 58, Issue 4, Pages 552-555Publisher
PHARMACEUTICAL SOC JAPAN
DOI: 10.1248/cpb.58.552
Keywords
mexicanolide; Xylocarpus moluccensis; insecticidal activity
Funding
- Chinese Academy of Sciences [KSCX2-YW-R-093, KZCX2-YW-216]
- National High Technology Research and Development Program of China (863 Program) [2007AA09Z407]
- National Natural Science Foundation of China [20772135]
- South China Sea Institute of Oceanology, Chinese Academy of Sciences [SQ200802]
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Two new mexicanolides, named xylomexicanolides A and B, were isolated from the seeds of an Indian mangrove, Xylocarpus moluccensis, together with four known limonoids, khayasin, angolensic acid methyl ester, khayasin T, and 2'S-methylbutanoylproceranolide. The structures of these limonoids were established on the basis of spectroscopic data. The C-13-NMR data of khayasin were reported for the first time. Khayasin was found to exhibit marked insecticidal activity against the fifth instar larvae of Brontispa longissima (GESTRO) at a concentration of 10 mg/l.
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