Alkylsulfanylphenyl Derivatives of Cytosine and 7-Deazaadenine Nucleosides, Nucleotides and Nucleoside Triphosphates: Synthesis, Polymerase Incorporation to DNA and Electrochemical Study
作者:Hana Macíčková-Cahová、Radek Pohl、Petra Horáková、Luděk Havran、Jan Špaček、Miroslav Fojta、Michal Hocek
DOI:10.1002/chem.201003496
日期:2011.5.16
halogenated nucleosides, nucleotides and nucleoside triphosphates derived from 5‐iodocytosine and 7‐iodo‐7‐deazaadenine with methyl‐, benzyl‐ and tritylsufanylphenylboronic acids gave the corresponding alkylsulfanylphenyl derivatives of nucleosides and nucleotides. The modified nucleoside triphosphates were incorporated into DNA by primer extension by using Vent(exo‐) polymerase. The electrochemical behaviour
来自5-碘代胞嘧啶和7-碘代-7-脱氮杂腺嘌呤的卤代核苷,核苷酸和三磷酸核苷的Suzuki-Miyaura水溶液与甲基,苄基和三苯甲基磺酰基苯基硼酸的交叉偶联反应得到了相应的核苷和核苷酸烷基硫烷基苯基衍生物。使用Vent(exo-)聚合酶通过引物延伸将修饰的三磷酸核苷掺入DNA中。烷基硫烷基苯基核苷的电化学行为表明在电极上形成致密层。修饰的核苷酸和结合了苄基或三苯硫基硫烷基苯基的DNA在[Co(NH 3)6 ] 3+中产生信号铵缓冲液,归因于Brdička催化反应,具体取决于所施加的负电位。在这种介质中反复进行恒流计时电位扫描,发现其Brdička催化反应增强,这表明在该条件下,烷基硫烷基衍生物脱保护为游离硫醇。