Profy A T, Lo K M, Usher D A
Nucleic Acids Res. 1983 Mar 11;11(5):1617-32. doi: 10.1093/nar/11.5.1617.
2'(3')-O-DL-Alanyl (Ip)5I was synthesized by a new method. An alanine ortho ester of inosine 5'-phosphate was added to (Ip)4I using the ATP-independent reaction of T4 RNA ligase, and the product was converted smoothly to the desired ester. The enzymic reverse transfer reaction was conveniently suppressed by the dephosphorylation of the adenosine 5'-phosphate coproduct, catalyzed in situ by alkaline phosphatase.
2'(3')-O-DL-丙氨酰基 (Ip)5I 通过一种新方法合成。利用 T4 RNA 连接酶的不依赖 ATP 的反应,将肌苷 5'-磷酸的丙氨酸邻酯添加到 (Ip)4I 中,产物顺利转化为所需的酯。通过碱性磷酸酶原位催化使腺苷 5'-磷酸副产物去磷酸化,可方便地抑制酶促逆向转移反应。