3'-dideoxy-2',3'-didehydronucleoside 5'-triphosphates known as highly potent chain terminators of DNA polymerases. Phosphonates 10a-d were obtained by alternative alkylations of the nucleic bases followed by condensation with ethyl [[(p-tolylsulfonyl)oxy]methyl]phosphonate. Pyrophosphorylation of 10a-d afforded phosphonate diphosphates 9a-d. Their substrate properties were evaluated in cell-free systems containing
合成了
嘧啶和
嘌呤9a-d的一系列
焦磷酸基(Z)-(膦甲氧基)丁-2-烯基衍
生物和相应的
膦酸酯10a-d。制备的化合物包含
膦酸酯基团(作为α-
磷酸酯模拟物)以及模拟2',3'-dideoxy-2',3'-deidehydronucleoside 5'-triphosphates中糖基部分的无环残基,被称为高效末端链
终止剂。
DNA聚合酶。通过对核酸碱基进行交替烷基化,然后与[[(对
甲苯磺酰基)氧基]甲基]
膦酸乙酯缩合,获得
膦酸酯10a-d。10a-d的
焦磷酸化得到
膦酸酯
二磷酸酯9a-d。在包含各种
DNA聚合酶(包括病毒逆转录酶)的无
细胞系统中评估了其底物特性。化合物9a-d对HIV-1和
AMV逆转录酶表现出良好的终止底物性质。它们显示出高选择性,未被人类
DNA聚合酶α和ε,大鼠肝脏的
DNA聚合酶β,大肠杆菌
DNA聚合酶I以及HSV-1和CMV
DNA聚合酶识别。
膦酸酯10b-d在HIV-1感