Solid-Phase Oligodeoxynucleotide Synthesis: A Two-Step Cycle Using Peroxy Anion Deprotection
作者:Agnieszka B. Sierzchala、Douglas J. Dellinger、Jason R. Betley、Tadeusz K. Wyrzykiewicz、Christina M. Yamada、Marvin H. Caruthers
DOI:10.1021/ja030376n
日期:2003.11.1
phosphoramidite based oligodeoxynucleotide two-step synthesis method has been developed. Keys to this method are replacement of the 5'-dimethoxytrityl blocking group with an aryloxycarbonyl and the use of N-dimethoxytrityl protection for the exocyclic amines of adenine and cytosine. With these modifications, coupling of each 2'-deoxynucleoside 3'-phosphoramidite to the growing oligodeoxynucleotide
开发了一种新型固相亚磷酰胺基寡脱氧核苷酸两步合成方法。该方法的关键是用芳氧基羰基替换 5'-二甲氧基三苯甲基封闭基团,并使用 N-二甲氧基三苯甲基保护腺嘌呤和胞嘧啶的环外胺。通过这些修饰,每个 2'-脱氧核苷 3'-亚磷酰胺与固体支持物上生长的寡脱氧核苷酸偶联后,可以用缓冲在 pH 9.6 的过氧阴离子的水性混合物处理。该试剂有效去除碳酸酯保护基团,同时氧化亚磷酸酯核苷酸间键。因此,新的两步合成循环是可能的。