Aglycone-focused randomization of 2-difluoromethylphenyl-type sialoside suicide substrates for neuraminidases
作者:Hirokazu Kai、Hiroshi Hinou、Shin-Ichiro Nishimura
DOI:10.1016/j.bmc.2012.02.001
日期:2012.4
potent inhibitor of neuraminidases, a hydrolase that is responsible for processing sialylated glycoconjugates, is a promising drug candidate for various infective diseases. The current study demonstrates that the use of an aglycone-focused library of 2-difluoromethylphenyl α-sialosides is an effective technique to find potent and selective mechanism-based labeling reagents for neuraminidases. The focused
神经氨酸酶的选择性和有效抑制剂是负责处理唾液酸化糖缀合物的水解酶,是治疗各种感染性疾病的有希望的药物。目前的研究表明,使用以糖苷配基为中心的2-二氟甲基苯基α-唾液酸苷文库是一种有效的技术,可以找到针对神经氨酸酶的有效的,基于选择性机理的标记试剂。通过点击反应,由4-叠氮基-2-二氟甲基苯基唾液苷(2)和炔烃封端的化合物库构建了聚焦库。重点文库显示了两种神经氨酸酶,霍乱弧菌神经氨酸酶(VCNA)和人神经氨酸酶2(hNeu2),并为每种神经氨酸酶选择最有效的抑制剂。所选抑制剂的动力学分析表明,糖苷配基部分的修饰提高了K I值,相对于基本骨架而言,酶活性的t 1/2值几乎没有变化(2)。