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Benzoylphloroglucinol derivatives from Hypericum scabrum
Michiko Matsuhisa1, Yasuhiro Shikishima, Yoshihisa Takaishi
1Faculty of Pharmaceutical Sciences, University of Tokushima, Shomachi 1-78, Tokushima, 770-8505, Japan.
Journal of Natural Products
|March 23, 2002
Summary
Nine novel compounds, hyperibones A-I, were identified from Hypericum scabrum. Some derivatives exhibited mild antibacterial effects against both methicillin-resistant and sensitive Staphylococcus aureus strains.
Area of Science:
- Natural Product Chemistry
- Medicinal Plant Research
- Pharmacognosy
Background:
- Hypericum scabrum is a medicinal plant found in Uzbekistan.
- Polyprenylated benzoylphloroglucinol derivatives are known for diverse biological activities.
Purpose of the Study:
- To isolate and characterize new compounds from Hypericum scabrum.
- To evaluate the antibacterial potential of isolated compounds.
Main Methods:
- Isolation of compounds using chromatographic techniques.
- Structure elucidation via 2D Nuclear Magnetic Resonance (NMR) and High-Resolution Mass Spectrometry (HRMS).
- In vitro antibacterial assays against Staphylococcus aureus strains.
Main Results:
- Nine new polyprenylated benzoylphloroglucinol derivatives, designated hyperibones A-I (1-9), were successfully isolated.
- The structures of compounds 1-9 were confirmed using comprehensive spectroscopic data.
- Compounds 1, 2, and 4 demonstrated mild in vitro antibacterial activity against both MRSA and MSSA.
Conclusions:
- Hypericum scabrum is a source of novel chemical entities.
- The isolated hyperibones represent a new class of benzoylphloroglucinol derivatives.
- Compounds 1, 2, and 4 show potential for further investigation as antibacterial agents.