It is an object to provide a nucleoside analog that can produce an oligonucleotide analog in which the two properties of chemical and biological stability, and the ability to form double strands, are excellent, and an oligonucleotide analog that includes that nucleoside analog.
This is achieved by a nucleoside analog or salt thereof represented by Formula (1) below, in which, in Formula (1), R1 is any group selected from the group consisting of the group of Formula (1), the group of Formula (2), the group of Formula (3), the group of Formula (4), the group of Formula (5), the group of Formula (6), the group of Formula (7), the group of Formula (8), and any of these groups whose functional group has been protected by a protecting group, and k, l, m, and n are each independently an integer from 1 to 10.
提供一种能够产生具有优异
化学和
生物稳定性以及形成双链的两个特性的寡
核苷酸类似物的核苷类似物的目标对象,以及包括该核苷类似物的寡
核苷酸类似物。通过以下式(1)所代表的核苷类似物或其盐实现这一目标,其中在式(1)中,R1是从以下组中选择的任意基团:式(1)的基团、式(2)的基团、式(3)的基团、式(4)的基团、式(5)的基团、式(6)的基团、式(7)的基团、式(8)的基团,以及这些基团中具有保护基团保护的任何基团,k、l、m和n分别独立地为1到10之间的整数。