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

Molecules

Tri Mayanti¹  Roekmiati Tjokronegoro¹  Unang Supratman¹  Mat Ropi Mukhtar¹  Khalijah Awang¹ 

[1] ¹Department of Chemistry, Faculty of Mathematics and Natural Sciences, Padjadjaran University, Jatinangor 45363, Indonesia ²Department of Chemistry, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia

关键词: kokosanolides;    tetranortriterpenoid;    onoceranoid;    Lansium domesticum;    meliaceae;    antifeedant activity;   

DOI  :  10.3390/molecules16042785

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.