Synthesis of two 6-aza-uridines modified by benzoheterocycle as environmentally sensitive fluorescent nucleosides
作者:Changge Zheng、Wenji Zhai、Jianquan Hong、Xiaoxiao Zhang、Zhenhua Zhu、Ling Wang
DOI:10.1016/j.tetlet.2017.05.087
日期:2017.8
Two fluorescent nucleosides were synthesized via incorporating benzothiophene and benzofuran into position 5 of 6-aza-uridines. With more intensive push-pull interactions between electron-deficient uridine core and electron-rich extended aromatic moieties, both extended 6-aza-uridines show enhanced bathochromic shifts with remarkable sensitivity to polarity, pH or viscosity changes, suitable as a useful
通过将苯并噻吩和苯并呋喃并入6-氮杂-尿苷的5位合成了两个荧光核苷。缺电子的尿苷核与富电子的扩展芳香族部分之间进行更深入的推挽相互作用,两个扩展的6-氮杂-尿苷均显示出增强的红移,对极性,pH或粘度变化具有显着的敏感性,适合用作有用的核碱基探针。对微环境的变化敏感。苯并呋喃修饰的扩展核苷在非极性溶剂中显示出很高的发射量子产率和发射强度。