polymerization of cytidine 5′-phosphorimidazolide in aqueous solution. 2′–5′ internucleotide linkage was preferentially formed. The yields of the 2′–5′ linked dimer, trimer, tetramer and pentamer were 17.0, 5.5, 1.9, and 0.7%, respectively. Some of their properties were studied by NMR, CD, UV, and chromatography and compared with the corresponding 3′–5′ linked oligomers which were prepared enzymatically.
通过
铅(II)离子催化聚合
胞苷 5'-
磷咪唑啉在
水溶液中制备了五聚体的寡核苷酸。优先形成 2'-5' 核苷酸间连接。2'-5' 连接的二聚体、三聚体、四聚体和五聚体的产率分别为 17.0、5.5、1.9 和 0.7%。通过 NMR、CD、UV 和色谱法研究了它们的一些特性,并与酶法制备的相应 3'-5' 连接的低聚物进行了比较。