申请人:Imanishi Takeshi
公开号:US20070270370A1
公开(公告)日:2007-11-22
Oligonucleotide analogues which have anti-sense or anti-gene activity, as well as in vivo stability, or pharmaceutically acceptable salts thereof. The oligonucleotide analogues have one or more structural units represented by the following formula (1
a
):
provided that when the oligonucleotide has two or more structural units of formula (1
a
), each B is the same or different, wherein B represents a purin-9-yl group or a 2-oxo-1,2-dihydropyrimidin-1-yl group.