Abstract
Two new sesquiterpene lactone glycosides and two new eudesmanolides, along with twelve known compounds were isolated from seeds of Carpesium macrocephalum. The structures of these new compounds were elucidated as 2α-O-β-D-glucopyranosyl-5α, 11αH-eudesma-4(15)-en-12,8β-olide (1), 2α-O-β-D-glucopyranosyl-5αH-eudesma-4(15),11(13)-dien-12, 8β-olide (2), 2α-acetoxy-5α-hydroxy-11αH-eudesma-4(15)-en-12,8β- olide (3) and 2α,5α-dihydroxy-11αH-eudesma-4(15)-en-12,8β-olide (4) by spectroscopic methods including 2D NMR techniques (1H-1H COSY, 1H-1H NOESY, HMQC, HMBC) and chemical transformations. Compounds 1, 6, 8, 9 and 10 exhibited moderate antibacterial activity, while compound 4 showed appreciable cytotoxic activity against cultured SMMC-7721 (human hepatoma cell).
| Original language | English |
|---|---|
| Pages (from-to) | 626-630 |
| Number of pages | 5 |
| Journal | Planta Medica |
| Volume | 68 |
| Issue number | 7 |
| DOIs | |
| State | Published - 2002 |
| Externally published | Yes |
Keywords
- Antibacterial activity
- Carpesium macrocephalum
- Compositae
- Cytotoxic activity
- Eudesmanolide
- Sesquiterpene lactone glycosides
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