Antifeedant Triterpenoids from the Seeds and Bark of Lansium domesticum cv Kokossan (Meliaceae)

作者：Mayanti Tri; Tjokronegoro Roekmiati; Supratman Unang^*; Mukhtar Mat Ropi; Awang Khalijah; Hadi A Hamid A

来源：Molecules, 2011, 16(4): 2785-2795.

DOI：10.3390/molecules16042785

• kokosanolides
• tetranortriterpenoid
• onoceranoid
• Lansium domesticum
• meliaceae
• antifeedant activity

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 (1)H- and (13)C-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.

• 出版日期2011-4