# α-Glycosidase activity of novel coumarin–triazole–coumarin dyads

## TL;DR

Researchers synthesized new coumarin-based compounds and found one with strong α-glycosidase inhibitory activity, which could be useful for treating diabetes.

## Contribution

A new class of coumarin–triazole–coumarin dyads was developed with notable α-glycosidase inhibition.

## Key findings

- Compound 4e showed the strongest α-glycosidase inhibition with an IC50 of 38.98 ± 0.77 μM.
- Compound 4e exhibited mixed-type inhibition as shown by the Lineweaver–Burk plot.
- The Ki value for 4e was determined to be 19.95 ± 0.15 μM using the Dixon plot.

## Abstract

Novel coumarin–triazole–coumarin dyads were synthesized and characterized, and their α-glycosidase inhibitory activities were evaluated spectrophotometrically. Compound 4e exhibited the most pronounced inhibitory effect, with an IC50 value of 38.98 ± 0.77 μM. The IC50 values for 4d and 4a were 93.55 ± 1.70 μM and 95.04 ± 3.55 μM, respectively. The Lineweaver–Burk plot showed that 4e inhibited α-glycosidase in a mixed type. In addition, the Ki value obtained from the Dixon plot was 19.95 ± 0.15 μM for α-glycosidase.