作者:Josephine Michael、Steven B. Larson、Morteza M. Vaghefi、Roland K. Robins
DOI:10.1002/jhet.5570270447
日期:1990.5
The syntheses of 3-amino-4-methyl-1-(β-D-ribofuranosyl)-1,2,4-triazolin-5-one (8a) and its 2′-deoxy analog 8b as well as 5-amino-2-methyl-1-(β-D-ribofuranosyl)-1,2,4-triazolin-3-one (12) have been accomplished. Compounds 8a and 8b were synthesized via glycosylation of 3-bromo-5-nitro-1,2,4-triazole which was followed by replacement in three steps of the 3-bromo function to yield 3-nitro-1-(2,3,5-t
3-氨基-4-甲基-1-(β-D-呋喃呋喃糖基)-1,2,4-三唑啉-5-酮(8a)及其2'-脱氧类似物8b和5-氨基-的合成已经完成了2-甲基-1-(β-D-呋喃呋喃糖基)-1,2,4-三唑啉-3-酮(12)。化合物8a和8b是通过3-溴-5-硝基-1,2,4-三唑的糖基化反应合成的,然后在3-溴功能的三个步骤中进行置换,得到3-硝基-1-(2,3 ,5-三-O-乙酰基-β-D-呋喃呋喃糖基)-1,2,4-三唑啉-5-酮(4a)及其2'-脱氧类似物4b。化合物4a和4b在N 2甲基化,经氢化和解封,得到3-氨基-4-甲基-1-(β-D-呋喃呋喃糖基)-1,2,4-三唑啉-5-酮(8a)和2'-脱氧类似物8b。通过3-氨基-1-甲基-1,2,4-三唑啉-5(2H)-一(10)的糖基化合成化合物12。通过单晶X射线衍射分析确认了8b和12的结构。