α-Glucosidase inhibitors are known to prevent the digestion of carbohydrates and reduce the impact of carbohydrates on blood glucose. Three series of tetracyclic oxindole derivatives were designed, synthesized and evaluated for α-glucosidase inhibitory activity in vitro. Compound 6t exhibited the most potent inhibitory activity with IC50 0.7 μM and was about 170 times as active as acarbose (IC50 = 115
已知α-葡萄糖苷酶抑制剂可防止碳水化合物的消化并减少碳水化合物对血糖的影响。设计,合成和评价了三系列的四环羟吲哚衍生物在体外对α-葡萄糖苷酶的抑制活性。化合物6t表现出最强的抑制活性,IC 50为0.7μM,活性约为阿卡波糖的170倍(IC 50 = 115.8μM)。化合物6t的动力学分析表明,它以不可逆和混合的方式抑制α-葡萄糖苷酶。荧光光谱表明6t直接与α-葡萄糖苷酶结合。对接模拟显示了6t和α-葡萄糖苷酶之间存在潜在的H键,van der Waals,Pi和Sigma-Pi相互作用。