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Updated: Jun 19, 2026

Metal-free Synthesis of Ynones from Acyl Chlorides and Potassium Alkynyltrifluoroborate Salts
Published on: February 24, 2015
New cyclopentenones from strain Trichoderma sp. YLF-3.
Guo-Hong Li1, Li-Jun Zheng, Fang-Fang Liu
1Laboratory for Conservation and Utilisation of Bio-Resources, Ministry of Education, Yunnan University, Kunming 650091, China.
Researchers isolated two new compounds, trichodermone A and B, from Trichoderma sp. YLF-3. One compound demonstrated antibacterial activity against Staphylococcus aureus and Bacillus cereus.
Area of Science:
- Natural Product Chemistry
- Microbiology
Background:
- The genus Trichoderma is a prolific source of bioactive secondary metabolites.
- Cyclopentenone derivatives are known for diverse biological activities.
Purpose of the Study:
- To isolate and characterize novel compounds from Trichoderma sp. YLF-3.
- To evaluate the antibacterial potential of isolated compounds.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation via comprehensive spectroscopic analysis (NMR, MS).
- Antibacterial activity screening using standard assays.
Main Results:
- Two new cyclopentenones, trichodermone A (1) and trichodermone B (2), were identified.
- A known compound, 3-(3-oxocyclopent-1-enyl) propanoic acid (3), was also isolated.
- Compound 3 exhibited significant antibacterial activity against Staphylococcus aureus and Bacillus cereus.
Conclusions:
- Trichoderma sp. YLF-3 produces novel cyclopentenone derivatives.
- Compound 3 shows promise as a potential antibacterial agent against Gram-positive bacteria.
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