Synthesis and antiviral activity of certain 9-.beta.-D-ribofuranosylpurine-6-carboxamides
作者:James D. Westover、Ganapathi R. Revankar、Roland K. Robins、Randall D. Madsen、John R. Ogden、James A. North、Robert W. Mancuso、Robert J. Rousseau、Edward L. Stephen
DOI:10.1021/jm00140a006
日期:1981.8
parameters necessary for antiviral efficacy of certain purine nucleosides, several 9-beta-D-ribofuranosylpurine-6-carboxamides have been synthesized. Glycosylation of the Me3Si derivative of purine--6-carboxamide with protected ribofuranose in the presence of a Lewis acid gave the blocked nucleoside which on deprotection furnished 9-beta-D-ribofuranosyl-6-iodopurine with cyanide ion. Certain 2-amino- and 2-
为了检查某些嘌呤核苷的抗病毒功效所必需的结构参数,已合成了几种9-β-D-呋喃核糖基嘌呤-6-羧酰胺。在路易斯酸存在下,嘌呤-6-羧酰胺的Me3Si衍生物与受保护的呋喃核糖的糖基化反应产生了被保护的核苷,该核苷酸在脱保护后提供了带有氰化物离子的9-β-D-核呋喃核糖基-6-碘嘌呤。还已经制备了某些2-氨基-和2-甲基-9-β-D-呋喃呋喃糖基嘌呤-6-羧酰胺。8-氨基甲酰基鸟苷(16)是通过母体核苷的均质酰化制备的。这些化合物针对细胞培养物中的几种RNA和DNA病毒进行了测试。9-β-D-呋喃核糖基嘌呤-6-羧酰胺(6a),相应的6-硫代羧酰胺(7b)和4-氨基-8-(β-D-呋喃核糖基氨基)嘧啶[5,4-d]嘧啶(8)在无毒剂量水平下显示出显着的体外抗病毒活性。以50(mg / kg)/天的剂量治疗裂谷热病毒感染的小鼠使用的6a在第21天的存活率为55%,而对照组为30%。