Synthesis, Mechanism and Fluorescence Properties of 8-(Aryl)-3-β-D-Ribofuranosylimidazo[2,1-i]purine 5′-Phosphate Derivatives
作者:Bilha Fischer、Eihab Kabha、Fernand-Pierre Gendron、Adrien R. Beaudoin
DOI:10.1080/15257770008033041
日期:2000.5
synthesis of new fluorescent nucleotides is described. This synthesis comprises two parallel reactions, the Kornblum oxidation and imidazole formation, which lead to 8-(aryl)-3-β-D-ribofuranosylimidazo[2,1-i]purine 5′-phosphates 2 from AMP or ATP. A detailed mechanism is proposed based on monitoring the reaction by 1H- and 13C-NMR spectroscopy, MS, FAB, HPLC, and pH meter. The spectral and fluorescent properties
摘要描述了新的荧光核苷酸的合成。该合成包括两个平行的反应,即Kornblum氧化和咪唑形成,它们导致来自AMP或ATP的8-(芳基)-3-β-D-呋喃呋喃基氨基咪唑并[2,1-i]嘌呤5'-磷酸酯2。在通过1H和13C-NMR光谱,MS,FAB,HPLC和pH计监测反应的基础上,提出了详细的机理。描述了在不同pH值下新衍生物的光谱和荧光性质,分别在碱性和中性介质中在290和420 nm处观察到3的激发和发射最大值。在酸性介质中,最大发射移至410 nm,但是荧光强度增加了1.5倍。ATP类似物2b和3b在通过II型ATPDase水解方面表现出相对的稳定性。