Biomimetic protecting-group-free 2′, 3′-selective aminoacylation of nucleosides and nucleotides
作者:Sohyoung Her、Ronald Kluger
DOI:10.1039/c0ob00795a
日期:——
Aminoacyl phosphate monoesters can be prepared free of an amino-protecting group and used directly in lanthanum-promoted selective monoacylation of either the 2′ or 3′-hydroxyl of nucleosides and nucleotides. For example, phenylalanyl ethyl phosphate rapidly forms esters with either of the 2′ or 3′-hydroxyls of ribonucleosides and nucleotides in the presence of lanthanum ions in aqueous buffer. Oligomerization
可以制备不含氨基保护基的氨基酰基磷酸单酯,并将其直接用于镧促进的核苷和核苷酸的2'或3'-羟基选择性单酰基化。例如,在水缓冲液中存在镧离子的情况下,磷酸苯丙氨酰基乙基磷酸酯与核糖核苷的2'或3'-羟基和核苷酸迅速形成酯。氨酰基磷酸的低聚比酯的形成慢得多,并且不是竞争性的过程。试剂的竞争性水解缓慢。通过扩展,该途径应提供简化的通向tRNA的合成氨基酰化衍生物的一般途径。