Abstract
This study investigated bioactive extracts of Polyalthia debilis (Annonaceae) with antimicrobial, antimalarial and cytotoxic activities. Extensive chromatographic isolations provided azafluorenone alkaloids; onychine (1) and 7-methoxyonychine (2) together with a mixture of β-sitosterol and stigmasterol. The two alkaloids were isolated from the P. debilis for the first time. Isolated fractions containing a mixture of triterpenoids (C7, C8 and C9) exhibited the most potent antimicrobial activity against many bacterial strains with minimum inhibitory concentration of 64 μg/mL. Fractions with antimalarial and cytotoxic activities were also observed. The findings suggest the potential use of P. debilis in medicinal applications.
| Original language | English |
|---|---|
| Pages (from-to) | 4414-4424 |
| Number of pages | 11 |
| Journal | Molecules |
| Volume | 14 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - Nov 2009 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- Antimalarial and cytotoxic activities
- Antimicrobial
- Azafluorenone
- Onychine
- Polyalthia debilis
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