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The continuous search for new compounds in natural-based plants is a promising strategy for the prevention of diseases. This work examined antiglycation activity compounds isolated from the antidiabetic extract of  T. alnifolia  stem bark  via in vitro  and computational [molecular dynamics (MD)] approach. Phytochemical investigation of ethyl acetate fraction and the application of spectroscopic methods led to the isolation and elucidation of 3 compounds: quercetin ( 1 ), kaempferol ( 2 ), and gallic acid ( 3 ). Compounds  1 ,  2  and  3  were then screened for antioxidant and antiglycation activities. Results show that the ethanol extract of  T. alnifolia  demonstrated good antioxidant activity compared to the standard gallic acid. There was a significant reduction in fasting blood glucose level progressively in diabetic rats, for 21 days compared to diabetic control. Consequently, the antiglycation activity of ethyl acetate fraction had the highest antiglycation activities, followed by dichloromethane (DCM) fraction. Compounds isolated from ethyl acetate fraction, exhibited the highest antiglycation effect for kaempferol followed by quercetin, while gallic acid had the least antiglycation effect. The root mean square of deviation (RMSD) and MM/GBSA energies obtained from molecular dynamics agree with the  in vitro  antiglycation activity with the sequence of structural stability in the order; kaempferol &gt; quercetin &gt; gallic acid. Therefore, findings from these results suggest that compounds isolated from  T. alnifolia  possess antiglycation activity. Communicated by Ramaswamy H. Sarma

In vitro and computational studies on the antiglycation activity of compounds isolated from antidiabetic Tetracera alnifolia stem bark