mRNA Cap Modification through Carbamate Chemistry: Synthesis of Amino- and Carboxy-Functionalised Cap Analogues Suitable for Labelling and Bioconjugation
作者:Marcin Warminski、Zofia Warminska、Joanna Kowalska、Jacek Jemielity
DOI:10.1002/ejoc.201500672
日期:2015.10
A simple and efficient synthesis of dinucleotide mRNA 5′ cap analogues functionalised by the addition of an amine or carboxylic acid group onto one of the ribose rings is reported. Selection of the modification sites was dictated by the recognition specificity for the 5′ cap by various cap-binding proteins, including eIF4E, DcpS, and Dcp2, as well as by bacteriophage RNA polymerase, which enables the
报道了一种简单有效的合成二核苷酸 mRNA 5' 帽类似物,通过在其中一个核糖环上添加胺或羧酸基团进行功能化。修饰位点的选择取决于各种帽结合蛋白(包括 eIF4E、DcpS 和 Dcp2)以及噬菌体 RNA 聚合酶对 5'帽的识别特异性,这使得合成帽能够并入 mRNA链。一些类似物通过三磷酸桥中的 O-to-CH2 取代进一步修饰,以赋予对特定水解酶的抗性。通过使用通过氨基甲酸酯部分连接到核糖的不同长度的二胺和氨基酸来平衡空间拥挤和结构刚性。通过 1 H NMR 光谱研究了这些取代对核糖组分构象平衡的影响。在 NHS 活化化学的帮助下,证明了类似物用于标记荧光染料和亲和标签的效用。