作者:Michael Novak、Megan Ruenz、Shahrokh Kazerani、Krisztina Toth、Thach-Mien Nguyen、Brian Heinrich
DOI:10.1021/jo0163492
日期:2002.4.1
the C-N bond of the neutral nucleoside, 1, occurs that has not been previously reported for simple purine nucleosides. Finally, under mildly alkaline conditions a process consistent with spontaneous decomposition of the anion 1(-) or OH(-)-induced decomposition of 1 is observed. The latter process has been observed for other purine nucleosides, including the closely related 1d, and involves nucleophilic
8-(芳基氨基)-2'-脱氧鸟苷或C-8加合物是由衍生自致癌胺和诱变胺的N-芳基氮鎓离子与DNA的2'-脱氧鸟苷(dG)和鸟苷残基反应形成的主要加合物。通过UV和HPLC方法在20℃在酸性,中性和弱碱性条件下测定三种C-8加合物1a-c的水解动力学。在pH <2时,主要的水解过程是双质子化底物1H(2)(+ 2)的CN键的自发裂解(方案2)。在这些条件下,C-8加合物的反应活性比dG高2至5倍。在3