Nucleoside analogues expressed by the following general formula
1
where B represents an aromatic base having carbonyl oxygen at the 2-position, or a 2-hydroxyphenyl group, or oligonucleotide derivatives containing one or more of the nucleoside analogues are provided.
The oligonucleotide derivatives are triplex-forming oligonucleotide derivatives which bind specifically to target double-stranded DNA with high affinity in the antigene method to form triplexes, and can thereby control and inhibit the expression of relevant genes efficiently, and which show high resistance to nucleases.
提供以下通式1所表示的核苷类似物,其中B代表具有2-位置上的羰基
氧或2-羟基
苯基基团的芳香基,或含有一种或多种核苷类似物的寡
核苷酸衍
生物。这些寡
核苷酸衍
生物是三链体形成寡
核苷酸衍
生物,通过抗
基因方法与高亲和力地特异性结合目标双链DNA形成三链体,从而能够高效地控制和抑制相关
基因的表达,并表现出高耐
核酸酶的特性。