A New Method for the Synthesis of Oligodeoxyribonucleotides Containing 4-<i>N</i>-Alkoxycarbonyldeoxycytidine Derivatives and Their Hybridization Properties
作者:Akio Kobori、Kenichi Miyata、Masatoshi Ushioda、Kohji Seio、Mitsuo Sekine
DOI:10.1021/jo010813l
日期:2002.1.1
experiments apparently showed that incorporation of 4-N-alkoxycarbonyldeoxycytidines into DNA strands resulted in higher hybridization affinity with the complementary DNA strands than that of 4-N-acyldeoxycytidines. In addition, comparable T(m) studies using oligodeoxyribonucleotides incorporating acyl (RC(O)-) groups and alkoxyacyl (RO(CH(2))(n)C(O)-) groups having the same chain length show that the
通过使用ZnBr(2)作为脱三苯甲基化剂,在具有新型苄氧基(二异丙基)甲硅烷基接头的聚苯乙烯型ArgoPore树脂上合成了掺入4-N-烷氧基羰基脱氧胞苷衍生物的寡脱氧核糖核苷酸。可以通过5'-O-DMTr-胸苷与二异丙基硅烷二基二三氟甲磺酸酯和含有羟基的ArgoPore树脂的连续原位反应,将第一个3'-末端胸苷与树脂连接。通过在中性条件下用TBAF处理,使用这种新的硅烷二基型接头可使DNA链从树脂中释放出来。T(m)实验显然表明,将4-N-烷氧基羰基脱氧胞苷掺入DNA链中比与4-N-酰基脱氧胞苷具有更高的与互补DNA链的杂交亲和力。此外,使用掺入酰基(RC(O)-)和链长相同的烷氧基(RO(CH(2))(n)C(O)-)的寡脱氧核糖核苷酸进行的可比T(m)研究表明,后者倾向于表现出T(m)值比前者高。结果表明4-N-烷氧基羰基脱氧胞苷不仅可以与脱氧鸟苷而且可以与脱氧腺苷形成碱基对。基于从头