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Antifeedant Triterpenoids from the Seeds and Bark of Lansium domesticum cv Kokossan (Meliaceae)
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Jatinangor 45363, Indonesia
Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia
* Author to whom correspondence should be addressed.
Received: 31 December 2010; in revised form: 28 February 2011 / Accepted: 2 March 2011 / Published: 29 March 2011
Abstract: Two tetranortriterpenoids, kokosanolide A (1) and C (2) were isolated from the seeds and three onoceranoid-type triterpenoids: kokosanolide B (3), 8,14-secogammacera-7,14-diene-3,21-dione (4) and a 1.5:0.5 mixture of 8,14-secogammacera-7,14(27)-diene-3,21-dione (5) and compound 4 were isolated from the bark of kokossan (Lansium domesticum). Complete 1H- and 13C-NMR data of the triterpenoids 1-5 are reported. The triterpenoids’ structures were elucidated primarily by means of high field 1D- and 2D-NMR, IR and HRMS spectral data. Triterpenoids 1-5 exhibited moderate to strong antifeedant activity against the fourth instar larvae of Epilachna vigintioctopunctata.
Keywords: kokosanolides; tetranortriterpenoid; onoceranoid; Lansium domesticum; meliaceae; antifeedant activity
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Mayanti, T.; Tjokronegoro, R.; Supratman, U.; Mukhtar, M.R.; Awang, K.; Hadi, A.H.A. Antifeedant Triterpenoids from the Seeds and Bark of Lansium domesticum cv Kokossan (Meliaceae). Molecules 2011, 16, 2785-2795.
Mayanti T, Tjokronegoro R, Supratman U, Mukhtar MR, Awang K, Hadi AHA. Antifeedant Triterpenoids from the Seeds and Bark of Lansium domesticum cv Kokossan (Meliaceae). Molecules. 2011; 16(4):2785-2795.
Mayanti, Tri; Tjokronegoro, Roekmiati; Supratman, Unang; Mukhtar, Mat Ropi; Awang, Khalijah; Hadi, A. Hamid A. 2011. "Antifeedant Triterpenoids from the Seeds and Bark of Lansium domesticum cv Kokossan (Meliaceae)." Molecules 16, no. 4: 2785-2795.