A New and Efficient Method for Synthesis of 5′-Conjugates of Oligonucleotides through Amide-Bond Formation on Solid Phase
作者:Anna V. Kachalova、Dmitry A. Stetsenko、Elena A. Romanova、Vadim N. Tashlitsky、Michael J. Gait、Tatiana S. Oretskaya
DOI:10.1002/1522-2675(200208)85:8<2409::aid-hlca2409>3.0.co;2-p
日期:2002.8
An efficient method for synthesis of oligonucleotide 5′-conjugates through amide-bond formation on solid phase is described. Protected oligonucleotides containing a 5′-carboxylic acid function were obtained by use of a novel non-nucleosidic phosphoramidite building block, where the carboxylic acid moiety was protected by a 2-chlorotrityl group. The protecting group is stable to the phosphoramidite
描述了一种通过在固相上形成酰胺键来合成寡核苷酸 5'-缀合物的有效方法。通过使用新型非核苷亚磷酰胺结构单元获得了含有 5'-羧酸功能的受保护寡核苷酸,其中羧酸部分被 2-氯三苯甲基保护。保护基团对固相寡核苷酸组装中使用的亚磷酰胺偶联条件稳定,但很容易通过温和的酸性处理去保护。保护基也可以通过氨解除去。在正常的肽偶联条件下,5'-羧酸盐修饰的寡核苷酸在固体支持物上与各种胺或小肽的 N 末端有效偶联,从而产生高纯度的产物。