The essential oil from the rhizomes of Hedychium gardnerianum Roscoe (`Kahili ginger') contains about 30% of sesquiterpenes, mainly cadinane derivatives. The following new sesquiterpenes were identiยฎed by their NMR and MS data: a-corocalene epoxide (104); 1,10;7,10-bisepoxy-1,10-seco-calamenene (68)
Antibacterial constituents from the rhizomes of Ferula communis
โ Scribed by Mohammed A. Al-Yahya; Ilias Muhammad; Humayun H. Mirza; Farouk S. El-Feraly
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 126 KB
- Volume
- 12
- Category
- Article
- ISSN
- 0951-418X
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โฆ Synopsis
The rhizomes of Ferula communis yielded three antibacterial sesquiterpenes, namely, the new daucane ester 14-(o-hydroxycinnamoyloxy)-dauc-4,8-diene (1), ferulenol (2) and ferchromone (3). Compound 1 exhibited significant activity against Gram-positive bacteria, while 3 was found to be less active. Compound 2, on the other hand, demonstrated potent activity against Mycobacterium organisms, and its corresponding C-4-acetoxy derivative 9 was found to retain the same activity as well. In addition, the rhizomes yielded a number of inactive compounds, including 2-nor-1,2-secoferulenol, elemicin, colladonin, feselol and compounds 4 and 5. Structural assignments were largely based on the spectral data, especially the 2D NMR COSY and HETCOR experiments.
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