4-(Sulfonylamino)phenyl α-D-glucopyranosides as competitive inhibitors of yeast α-glucosidase

Abstract
Certain members of a series of 4-(sulfonylamino)phenyl α-D-glucopyranosides are extremely good competitive inhibitors of yeast α-glucosidase and, remarkably, 4-(4-nitrophenylsulfonylamino)phenyl and 4-(2-naphthylsulfonylamino)phenyl α-D-glucopyranoside (Ki, 4.8 and 3.1 µmol dm–3, respectively) are superior to 1-deoxynojirimycin (Ki, 14.6 µmol dm–3) against this enzyme.