Journal
JOURNAL OF NATURAL PRODUCTS
Volume 72, Issue 12, Pages 2110-2114Publisher
AMER CHEMICAL SOC
DOI: 10.1021/np900625w
Keywords
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Funding
- Chinese Academy of Sciences [KSCX2-YW-R-093, KZCX2-YW-216, SQ200802]
- National High Technology Research and Development Program of China [2007AA09Z407]
- National Natural Science Foundation of China [20772135]
- South China Sea Institute of Oceanology, Chinese Academy of Sciences [SQ200802]
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Seven new limonoids (1-7), named granatumins A-G, were isolated from seeds of an Indian mangrove (Xylocarpus granatum) collected from the wetlands of Krishna estuary, Andhra Pradesh. The known compounds khayasin T, tigloylseneganolide A, 6-deoxyswietenine, swietemahonolide, febrifugin A, gedunin, xylogranatinin, phaseic acid, (2R,3R)-3,4',5,7-tetrahydroxyflavanone, and (E)-4-hydroxycinnamic acid were also isolated. The structures were established on the basis of spectroscopic data. Granatumins A and B are mexicanolides with endo-conjugated Delta(8.30) and Delta(14.15) double bonds, and granatumins F and G are polyhydroxylated phragmalins found previously in plants of the Meliaceae. Khayasin T exhibited moderate insecticidal activity against fifth instar larvae of Brontispa longissima (Gestro) at a concentration of 20 mg/L.
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