Chemical constituents of Indonesian plant Protium java']javanicum Burm. f. and their antifeedant activities against Coptotermes formosanus Shiraki
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Adfa, Morina
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Hattori, Yosuke
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Ninomiya, Masayuki
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Funahashi, Yasuhiro
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Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, JapanGifu Univ, Fac Engn, Dept Mat Sci & Technol, Gifu 5011193, Japan
Funahashi, Yasuhiro
[3
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Yoshimura, Tsuyoshi
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Koketsu, Mamoru
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[1] Gifu Univ, Fac Engn, Dept Mat Sci & Technol, Gifu 5011193, Japan
[2] Bengkulu Univ, Fac Math & Nat Sci, Dept Chem, Bengkulu 38371, Indonesia
[3] Nagoya Inst Technol, Grad Sch Engn, Dept Frontier Mat, Showa Ku, Nagoya, Aichi 4668555, Japan
In the continuing study of antifeedant compounds in Protium javanicum Burm. f. against Coptotermes formosanus Shiraki, 6-desacetylnimbin (1), quercitrin (2) and myricitrin (3) were isolated from P. javanicum extract. All compounds were characterised by NMR and MS. Furthermore, the structure of 6-desacetylnimbin was confirmed by X-ray crystallography. The antifeedant activity was evaluated with no-choice feeding tests. At a dose of 0.5?mg, 6-desacetylnimbin exhibited the highest antifeedant activity among the isolates.