Abstract
Seventeen daucane sesquiterpenoid esters, including a new one (4), were isolated from the root of Ferula hermonis Boiss. The structures of the isolated compounds were elucidated on the basis of spectroscopic evidence and correlated with known compounds. The relative stereochemistry of the new compound was determined using 2D NOESY and the most stable and the lowest energy conformation was determined using molecular modelling. The antimicrobial activity was evaluated by determination of MIC using the broth microdilution method against six bacterial strains and one fungal strain (Pseudomonas aeruginosa PAO1, Escherichia coli, Bacillus subtilis ATCC6633, Mycobacterium bovis BCG Pasteur, Mycobacterium tuberculosis H37Rv, Staphylococcus aureus ATCC6538 and Candida albicans SC5314). There was a significant indication that compounds 15, 16, 17 demonstrated potent activity against Gram +ve (S. aureus, B. subtilis), as well as Mycobacterium strains M. bovis BCG and M. tuberculosis H37Rv. None of the isolated compounds exhibited a significant antifungal activity. In the antioxidant study using the DPPH assay method, the highest radical scavenging activity was observed for compounds 15, 16, 17.
Original language | English |
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Pages (from-to) | 579-586 |
Number of pages | 8 |
Journal | Phytotherapy Research |
Volume | 26 |
Issue number | 4 |
Early online date | 26 Sept 2011 |
DOIs | |
Publication status | Published - Apr 2012 |
Bibliographical note
AcknowledgementZ. Z. Ibraheim thanks the Egyptian Government for the postdoctoral fellowship and funding. The antimicrobial study was supported by grants from the Chinese Academy of Sciences Innovation Projects O62A131BB4. L. Zhang was an awardee for the Hundred Talents Pro-gram. M. Jaspars is the recipient of a BBSRC Research Development Fellowship.
Funded by
Chinese Academy of Sciences Innovation Projects. Grant Number: O62A131BB4
Keywords
- antimicrobial activity
- daucane sesquiterpene esters
- Ferula hermonis
- radical scavenging activity