A new lignan with hypoglycemic activity from Tadehagi triquetrum

Area of Science:

• Phytochemistry
• Pharmacology
• Natural Products Chemistry

Background:

• Tadehagi triquetrum is a plant source of bioactive compounds.
• Lignans and coumarins are classes of natural products with diverse biological activities.
• Investigating plant-derived compounds for therapeutic potential is crucial.

Purpose of the Study:

• To isolate and characterize novel and known compounds from Tadehagi triquetrum.
• To evaluate the hypoglycemic effects of the isolated compounds in vitro.
• To explore the potential of these natural products in managing hyperglycemia.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation utilizing advanced spectroscopic methods (NMR, MS).
• In vitro assessment of hypoglycemic activity using HepG2 cells to measure glucose uptake.

Main Results:

• A new lignan, tadehaginosin, was successfully isolated and structurally identified.
• A known coumarin derivative, 3,4-dihydro-4-(4'-hydroxyphenyl)-5,7-dihydroxycoumarin, was also isolated.
• Both isolated compounds significantly increased glucose consumption by HepG2 cells, indicating hypoglycemic potential.

Conclusions:

• Tadehagi triquetrum yields structurally interesting lignan and coumarin compounds.
• Tadehaginosin and the known coumarin exhibit promising in vitro hypoglycemic activity.
• These findings support the ethnobotanical use of Tadehagi triquetrum and warrant further investigation for diabetes treatment.