Discovery and evaluation of novel benzazepinone derivatives as glycogen phosphorylase inhibitors with potent activity.

Glycogen phosphorylase (GP) is a key enzyme of glycogen catabolism, so it is significant to discover a new GP inhibitor. A series of benzazepinone derivatives were discovered as GP inhibitors with potent activity. Among these derivatives, compound showed significant potential against rabbit muscle GPa (IC = 0.25 ± 0.05 μM) and cellular efficacy. The study revealed that significantly inhibited increases in fasting blood glucose level in two kinds of hyperglycemic mice models. The possible binding mode of compound was explored based on molecular docking simulations. These results indicated that derivatives with benzazepinone were potential chemical entities against hyperglycemia.