申请人:Agilent Technologies, Inc.
公开号:US20150133631A1
公开(公告)日:2015-05-14
An oligonucleotide derivative having the structure of formula (A) and methods for preparing the oligonucleotide derivative are disclosed. wherein R
3
is a first oligonucleotide; R
1
is selected from the group consisting of alkyl, cycloalkyl, aryl, heterocyclyl, heteroaryl, a polyethylene glycol, a peptide, a protein, a polysaccharide, and a second oligonucleotide; R
2
is a linker or a direct bond; Z
1
is NR
4
, S, or O, and Z
2
is NR
4
or S, wherein R
4
is selected from H, alkyl, aryl, heterocyclyl, or heteroaryl. A method includes: synthesizing an oligonucleotide derivative comprising an amino or thiol group; and reacting a 3,4-dialkoxycyclobutene-1,2-dione with the oligonucleotide derivative to produce an oligonucleotide-squarate mono-conjugate.