Substrate/inhibition studies of bacteriophage T7 RNA polymerase with the 5′-triphosphate derivative of a ring-expanded (‘fat’) nucleoside possessing potent antiviral and anticancer activities
作者:Maria Bretner、Dorothy Beckett、Ramesh K. Sood、Donna M. Baldisseri、Ramachandra S. Hosmane
DOI:10.1016/s0968-0896(99)00235-7
日期:1999.12
potent, broad spectrum antiviral and anticancer activities of a number of ring-expanded ('fat') nucleosides that we recently reported, a representative 'fat' nucleoside 4,6-diamino-8-imino-8H-1-beta-D-ribofuranosylimidazo[4,5-e][1,3]di azepine (1) was converted to its 5'-triphosphate derivative (2), and biochemically screened for possible inhibition of nucleic acid polymerase activity, employing synthetic
为了探索我们最近报道的许多环扩(“脂肪”)核苷的有效,广谱抗病毒和抗癌活性机制的一部分,代表性的“脂肪”核苷4,6-二氨基-8-将亚氨基-8H-1-β-D-呋喃呋喃基咪唑并[4,5-e] [1,3]二氮杂(1)转化为其5'-三磷酸衍生物(2),并进行生化筛选以抑制核酸聚合酶活性,采用合成DNA模板和噬菌体T7 RNA聚合酶为代表的聚合酶。我们的结果表明2是T7 RNA聚合酶的中度抑制剂,并且2的5'-三磷酸部分似乎对抑制至关重要,因为仅核苷1不能抑制聚合酶反应。