Azetidine Based Transition State Analogue Inhibitors of <i>N</i>-Ribosyl Hydrolases and Phosphorylases
作者:Gary B. Evans、Richard H. Furneaux、Ben Greatrex、Andrew S. Murkin、Vern L. Schramm、Peter C. Tyler
DOI:10.1021/jm701265n
日期:2008.2.1
ribooxacarbenium carbon from the fixed purine to phosphate and water nucleophiles, respectively. As the lysis reaction progresses along the reaction coordinate, the distance between the purine and carbocation increases and the distance between carbocation and nucleophile decreases. Immucillin-H and DADMe-immucillin-H have been shown previously to be potent inhibitors of purine nucleoside phosphorylases and lie more
N-核糖基磷酸化酶和水解酶通过将阳离子核糖氧碳carb碳分别从固定的嘌呤迁移到磷酸和水亲核试剂来催化亲核取代反应。随着裂解反应沿着反应坐标进行,嘌呤和碳正离子之间的距离增加,而碳正离子和亲核试剂之间的距离减小。以前已显示Immucillin-H和DADMe-immucillin-H是嘌呤核苷磷酸化酶的有效抑制剂,分别位于该反应坐标的反应物和产物侧。目前正在人类临床试验中针对不同适应症的这两种酶抑制剂都是手性的且制造昂贵。现在,我们报告DADMe-immucillins的氮杂环丁烷类似物的合成,