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Cysestermerol A, a rare stilbene sestermer with significant hypoglycemic activities from Cynodon dactylon
Feng Wang1, Li Zhang1, Bi-Jun Li1
1Key Laboratory of Digital Quality Evaluation of Chinese Materia Medica of State Administration of TCM and Engineering, Technology Research Center for Chinese Materia Medica Quality of the Universities of Guangdong Province, School of Traditional Chinese Medicine, Guangdong Pharmaceutical University, Guangzhou, China.
A new compound, Cysestermerol A, from Cynodon dactylon, boosts glucose consumption in liver cells and inhibits alpha-glucosidase activity. This natural product shows potential for managing blood sugar levels.
Area of Science:
- Natural Product Chemistry
- Pharmacology
- Biochemistry
Background:
- Cynodon dactylon (Bermuda grass) is a widely distributed plant with a history of traditional medicinal use.
- Exploring novel compounds from medicinal plants can lead to new therapeutic agents.
Purpose of the Study:
- To isolate and characterize a new compound from Cynodon dactylon.
- To investigate the potential anti-diabetic properties of the isolated compound.
Main Methods:
- Isolation and purification of Cysestermerol A from Cynodon dactylon.
- Structure elucidation using High-Resolution Electrospray Ionization Mass Spectrometry (HRESIMS) and Nuclear Magnetic Resonance (NMR) spectroscopy.
- Absolute configuration determination via electronic circular dichroism (ECD) calculations.
- In vitro alpha-glucosidase inhibition assay.
- Assessment of glucose consumption in HepG2 cells.
Main Results:
- A novel stilbene sestermer, Cysestermerol A (1), was successfully isolated and its structure elucidated.
- Cysestermerol A demonstrated significant glucose consumption enhancement in HepG2 cells, comparable to rosiglitazone.
- The compound markedly inhibited alpha-glucosidase activity in vitro.
Conclusions:
- Cysestermerol A is a newly identified natural product with promising anti-diabetic potential.
- Its ability to increase glucose uptake and inhibit alpha-glucosidase suggests therapeutic applications for diabetes management.
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