Abstract
Leaves and flowers of Artemisia gorgonum (Asteraceae) collected in Fogo, Cape Verde islands, were phytochemically investigated and resulted in isolation and characterization of three guaianolides 1, 2, 5, and a secoguainolide 4, in addition to eight known guaianolides 6-11 and two known germacranolides 12, 13. Structures were elucidated by 1D and 2D NMR experiments. Careful examination of the 13C NMR spectrum led to revision of the structure of a previously described guaianolide from 2 to 3. Most compounds exhibited mild antiplasmodial activities, ridentin (13) being the most interesting with an IC50 of 3.8 ± 0.7 μg ml-1 against Plasmodium falciparum FcB1 and weak cytotoxicity in a vero cell line (IC50 71.0 ± 3.9 μg ml-1).
| Original language | English |
|---|---|
| Pages (from-to) | 2961-2965 |
| Number of pages | 5 |
| Journal | Phytochemistry |
| Volume | 69 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - Dec 2008 |
| Externally published | Yes |
Keywords
- Antimalarial
- Artemisia
- Asteraceae
- Guaianolide
- Sesquiterpene lactones