| Literature DB >> 14738378 |
Marvin J Núñez1, Ana Guadaño, Ignacio A Jiménez, Angel G Ravelo, Azucena González-Coloma, Isabel L Bazzocchi.
Abstract
The new sesquiterpene pyridine alkaloids chiapenines ES-I (1), ES-II (2), ES-III (3), and ES-IV (4), in addition to the known alkaloids wilfordine (5), alatamine (6), wilforidine (7), alatusinine (8), euonine (9), euonymine (10), ebenifoline E-I (11), forrestine (12), mayteine (13), and 4-hydroxy-7-epi-chuchuhuanine E-V (14), were isolated from the leaves of Maytenus chiapensis. Their structures were elucidated by 1D and 2D NMR spectroscopy, including homonuclear and heteronuclear correlation (COSY, ROESY, HSQC, and HMBC) experiments. Wilfordine, alatusinine, and euonine exhibited strong antifeedant activity against Spodoptera littoralis.Entities:
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Year: 2004 PMID： 14738378 DOI： 10.1021/np030347q
Source DB: PubMed Journal: J Nat Prod ISSN： 0163-3864 Impact factor: 4.050