Synthesis of a hydrogen-bond-degenerate tricyclic pyrrolopyrimidine nucleoside and of its 5′-triphosphate
作者:David M. Williams、David Loakes、Daniel M. Brown
DOI:10.1039/a805025b
日期:——
chloride. Transformation to the 5-aminooxyethyl derivative and ring closure of the latter gave the tricyclic 2-(2-deoxyribosyl)-4-methylsulfonyl-7-oxa-2,3,5,6-tetraazabenz[cd]azulene. Hydrazinolysis of the methylsulfonyl residue, then mercury(II) oxide oxidation, led to the target nucleoside 4. For its study as a polymerase substrate for incorporation into DNA the 5′-triphosphate was synthesised.
描述了许多7-(2-脱氧核呋喃呋喃糖基)吡咯并[2,3- d ]嘧啶衍生物的合成。其中2-甲基硫烷基-4-羟基-5-乙酰氧基乙基衍生物7是通过将2-甲基硫烷基-4-羟基-6-氨基嘧啶与2-氯-4-乙酰氧基丁醛6缩合而方便地形成的。然后用三氯化磷将其转化为4-氯衍生物12,并与3,5-二-对甲苯甲酰基-2-脱氧-α-核糖基氯偶合。转化为5-氨基氧乙基衍生物并使其闭环,得到三环2-(2-脱氧核糖基)-4-甲基磺酰基-7-氧杂-2,3,5,6-四氮杂苯并[ cd ]]。甲基磺酰基残基然后汞的水合肼解(II)氧化,生成目标核苷4。合成了5'-三磷酸酯,作为掺入DNA的聚合酶底物进行了研究。