Third-Generation Immucillins: Syntheses and Bioactivities of Acyclic Immucillin Inhibitors of Human Purine Nucleoside Phosphorylase
作者:Keith Clinch、Gary B. Evans、Richard F. G. Fröhlich、Richard H. Furneaux、Peter M. Kelly、Laurent Legentil、Andrew S. Murkin、Lei Li、Vern L. Schramm、Peter C. Tyler、Anthony D. Woolhouse
DOI:10.1021/jm801421q
日期:2009.2.26
ImmH (1) and DADMe-ImmH (2) are potent inhibitors of human purine nucleoside phoshorylase (PNP), developed by us and currently in clinical trials for the treatment of a variety of T-cell related diseases. Compounds 1 and 2 were used as templates for the design and synthesis of a series of acyclic immucillin analogues (8−38) in order to identify simplified alternatives to 1 and 2. SerMe-ImmG (8) and
ImmH ( 1 ) 和 DADMe-ImmH ( 2 ) 是人类嘌呤核苷磷酸化酶 (PNP) 的强效抑制剂,由我们开发,目前正在进行临床试验,用于治疗多种 T 细胞相关疾病。化合物1和2被用作设计和合成一系列无环免疫球蛋白类似物 ( 8 - 38 ) 的模板,以识别1和2 的简化替代品。SerMe-ImmG ( 8 ) 和 DATMe-ImmG ( 9 ) 相对于 PNP 显示出最低的抑制常数,分别为 2.1 和 3.4 pM。假设8和9使他们能够在 PNP 的活性位点内采用类似于1和2 的构象,并且两个羟基的定位对于皮摩尔活性至关重要。SerMe-ImmH ( 10 , K d = 5.2 pM) 被证明在小鼠体内可口服,在血液 PNP 上的生物停留时间很长。