Two antidiabetic constituents from Roylea cinerea (D.Don) Baill

Area of Science:

• Phytochemistry
• Pharmacology

Background:

• Roylea cinerea (D.Don) Baill. is traditionally used in Ayurvedic medicine for diabetes.
• Isolation and characterization of bioactive compounds from medicinal plants are crucial for drug discovery.

Purpose of the Study:

• To isolate and elucidate the structures of antidiabetic compounds from Roylea cinerea.
• To evaluate the in vitro and in vivo antidiabetic efficacy of the isolated compounds.

Main Methods:

• Isolation of compounds using chromatographic techniques.
• Structure elucidation using advanced spectroscopic methods (2D NMR, MS).
• In vivo antidiabetic activity assessed in alloxan-induced diabetic rats.
• In vitro enzyme inhibition assays (α-amylase, α-glucosidase).

Main Results:

• Two compounds, 4-methoxybenzo[b]azet-2(1H)-one (1) and a bacteriohopene derivative (2), were identified.
• Both compounds (1 and 2) significantly reduced blood glucose levels in diabetic rats at 10 mg/kg.
• Compound 1 inhibited α-amylase and α-glucosidase by 83.0% and 78.5%, respectively, at 100 μM.
• Compound 2 inhibited α-amylase and α-glucosidase by 58.2% and 58.4%, respectively, at 100 μM.

Conclusions:

• The isolated compounds, particularly compound 1, exhibit potent antidiabetic properties.
• The findings scientifically validate the traditional use of Roylea cinerea for managing diabetes.
• Further research into these compounds could lead to new antidiabetic drug development.