Acarbose, also known as BAY g 5421, is an α-glucosidase inhibitor that prevents absorption of sucrose and maltose. This compound has been found to delay digestion of complex disaccharides and carbohydrates. Further studies suggest that this compound can stimulate phosphorylase kinase (PhK) by binding to the glucoamylase-like domain new the amino termini and causing an alteration in the structure.