Efficient guanidination of the phosphate linkage towards cationic phosphoramidate oligonucleotides

被引:20
作者
Michel, T [1 ]
Debart, F [1 ]
Vasseur, JJ [1 ]
机构
[1] Univ Montpellier 2, Lab Chim Organ Biomol Synth, CNRS, UMR 5625,UM 2,CC 008, F-34095 Montpellier 05, France
关键词
D O I
10.1016/S0040-4039(03)01694-0
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
An efficient postsynthesis method of guanidination of oligonucleotides was employed to introduce several guanidinium groups into internucleotide phosphoramidate linkages. The amino functions of aminobutylphosphoramidate links were converted to guanidine butylphosphoramidates using a solution of O-methylisourea hemisulfate in aqueous ammonia, in a short reaction time. The synthesis of various fully guanidylated oligonucleotides was successfully performed to provide a new class of cationic phosphoramidate oligonucleotides. (C) 2003 Published by Elsevier Ltd.
引用
收藏
页码:6579 / 6582
页数:4
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