Enhanced reactivity of amino-modified oligonucleotides by insertion of aromatic residue
摘要:
We developed novel amino-modifying reagents, of which an amino group was connected with an aromatic residue by aliphatic linker. It was proved that the insertion of the aromatic residue could increase the reactivity of the amino group on oligo-nucleotides in comparison with conventional amino-modification. (c) 2006 Elsevier Ltd. All rights reserved.
Enhanced reactivity of amino-modified oligonucleotides by insertion of aromatic residue
摘要:
We developed novel amino-modifying reagents, of which an amino group was connected with an aromatic residue by aliphatic linker. It was proved that the insertion of the aromatic residue could increase the reactivity of the amino group on oligo-nucleotides in comparison with conventional amino-modification. (c) 2006 Elsevier Ltd. All rights reserved.
We developed new amino linker reagents for an oligonucleotide (ONT) terminus. These reagents consist of an aminoethyl carbamate main linkage and a side-chain residue, which was a naphthylmethoxymethyl, methoxymethyl, or methyl group or a hydrogen atom. The primary amine was protected with a monomethoxytrityl (MMT) group. The chemical properties of ONTs containing these amino-modifications were investigated. The MMT group of these amino-modifications could be quite rapidly removed from the amine under very mild acidic conditions, which are not strong enough for the deprotection of a conventional aliphatic amine. This significant feature enabled the amino-modified ONTs to be conveniently purified with a reverse phase column. Furthermore, the amino-modifications efficiently reacted to active esters, as compared with other amino-modifications. We also found that the pK(a), values of the amino-modifications were lower than that of the aliphatic amine. All of the experimental results showed that these chemical properties are closely related to their structures. We report here the chemical properties and the availability of the new amino linker reagents. (C) 2007 Elsevier Ltd. All rights reserved.
Enhanced reactivity of amino-modified oligonucleotides by insertion of aromatic residue
We developed novel amino-modifying reagents, of which an amino group was connected with an aromatic residue by aliphatic linker. It was proved that the insertion of the aromatic residue could increase the reactivity of the amino group on oligo-nucleotides in comparison with conventional amino-modification. (c) 2006 Elsevier Ltd. All rights reserved.