作者:Wei Wang、Maria G. M. Purwanto、Klaus Weisz
DOI:10.1039/b316077g
日期:——
Four nonnatural imidazole nucleosides with different substituents were synthesized and studied for their binding to a CG Watson-Crick base pair by NMR spectroscopic techniques in an aprotic solvent. Concentration and temperature dependent measurements allowed the determination of association constants, association enthalpies and entropies. Strong binding was observed with analogues carrying an ureidophenyl
合成了四个具有不同取代基的非天然咪唑核苷,并在非质子溶剂中通过NMR光谱技术研究了它们与CG Watson-Crick碱基对的结合。浓度和温度相关的测量值可以确定缔合常数,缔合焓和熵。在带有脲基苯基取代基的类似物中观察到强结合,并且相应的缔合焓与预期的与CG碱基对的三个氢键的形成相容。相反,对于具有氨基苯基或苯甲酰氨基苯基取代基的类似物,仅观察到弱结合。