Syntheses and bio-activities of the l-enantiomers of two potent transition state analogue inhibitors of purine nucleoside phosphorylases
作者:Keith Clinch、Gary B. Evans、George W. J. Fleet、Richard H. Furneaux、Stephen W. Johnson、Dirk H. Lenz、Simon P. H. Mee、Peter R. Rands、Vern L. Schramm、Erika A. Taylor Ringia、Peter C. Tyler
DOI:10.1039/b517883e
日期:——
enantiomers of some pharmaceuticals have revealed surprising biological activities, the L-nucleoside analogues (+)-5 x HCl and (-)-6, respectively, of D-ImmH and D-DADMe-ImmH, were prepared and their PNPase binding properties were studied. For the synthesis of compound (-)-6 suitable enzyme-based routes to the enantiomerically pure starting material (3S,4S)-4-(hydroxymethyl)pyrrolidin-3-ol [(-)-6] and its
(1R)-1-(9-脱氮杂黄嘌呤-9-基)-1,4-二脱氧-1,4-亚氨基-L-核糖醇[(+)-5]和(3S,4S)-1-[[9 -脱氮杂黄嘌呤-9-基)甲基] -4-(羟甲基)吡咯烷-3-醇[(-)-6]是Immucillin-H(D-ImmH)和DADMe-immucillin-H(D-这些D-异构体分别是嘌呤核苷磷酸化酶(PNPases)的高亲和力过渡态类似物抑制剂,被开发为针对涉及T细胞异常活化的疾病的潜在药物。盐酸C-核苷D-ImmH [(-)-5)x HCl,现在作为抗T细胞白血病剂正在“ Fodosine”处于II期临床试验,而D-DADMe-ImmH是第二代抑制剂与目标酶具有极强的结合力,并已作为抗银屑病药物进入临床第一阶段测试。由于某些药物的对映异构体显示出令人惊讶的生物学活性,因此分别制备了D-ImmH和D-DADMe-ImmH的L-核苷类似物(+)-5 x HCl和(