Lignans from the roots of Echinops giganteus
✍ Scribed by Mathieu Tene; Pierre Tane; Beiban L. Sondengam; Joseph D. Connolly
- Book ID
- 108242305
- Publisher
- Elsevier Science
- Year
- 2004
- Tongue
- English
- Weight
- 186 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0031-9422
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## Abstract The five new lignans designated 3′,4′‐de‐__O__‐methylenehinokinin (**1**), taiwaninolide (**2**), 8′‐hydroxysavinin (**3**), isoguamarol (**4**), and 4′‐__O__‐methylsalicifolin (**5**), as well as the new 4‐(3,4‐dimethoxybenzyl)dihydro‐3‐(4‐hydroxybenzyl)furan‐2(3__H__)‐one (**6**) were
The essential oil from the roots of Echinops giganteus var. lelyi C. D. Adams from Cameroon was investigated by GC, GC±MS and NMR spectroscopy. The oil contains exclusively sesquiterpenes, two-thirds of which are hydrocarbons. Eighteen components, representing 83% of the oil, could be identi®ed; 14