Solid-Phase Chemical Synthesis of Phosphonoacetate and Thiophosphonoacetate Oligodeoxynucleotides
作者:Douglas J. Dellinger、David M. Sheehan、Nanna K. Christensen、James G. Lindberg、Marvin H. Caruthers
DOI:10.1021/ja027983f
日期:2003.1.1
Phosphonoacetate and thiophosphonoacetate oligodeoxynucleotides were prepared via a solid-phase synthesis strategy. Under Reformatsky reaction conditions, novel esterified acetic acid phosphinodiamidites were synthesized and condensed with appropriately protected 5'-O-(4, 4'-dimethoxytrityl)-2'-deoxynucleosides to yield 3'-O-phosphinoamidite reactive monomers. These synthons when activated with tetrazole
Phosphonoacetate 和 thiophosphonoacetate 寡脱氧核苷酸是通过固相合成策略制备的。在 Reformatsky 反应条件下,合成了新型酯化乙酸膦酰二亚胺,并与适当保护的 5'-O-(4, 4'-二甲氧基三苯甲基)-2'-脱氧核苷缩合,生成 3'-O-膦亚酰胺反应单体。这些合成子在用四唑激活时与自动 DNA 合成仪一起使用,以在受控孔玻璃上制备膦酰乙酸修饰的核苷酸间连接。在每一步用 (1S)-(+)-(10-樟脑磺酰基)恶氮丙啶或 3H-1,2-苯二硫醇-3-one-1 定量氧化膦基乙酸酯偶联产物,1-二氧化物产生混合序列膦酰乙酸酯和硫代膦酰乙酸酯寡脱氧核苷酸,平均每循环偶联效率大于 97%。完全脱保护、修饰的寡脱氧核苷酸通过反相 HPLC 纯化,并通过离子交换 HPLC、(31) P NMR 和 MALDI/TOF 质谱进行表征。两种类似物都对蛇毒磷酸二酯酶的水解稳定并刺激