2',7'-difluoro-5-((4-nitrophenyl)sulfonamido)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl bis(2,2-dimethylpropanoate) | 443302-14-5

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并吡喃
• 英文名称: 2',7'-difluoro-5-((4-nitrophenyl)sulfonamido)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl bis(2,2-dimethylpropanoate)
• CAS: 443302-14-5
• 化学式: C₃₆H₃₀F₂N₂O₁₁S
• 分子量: 736.704
• InChiKey: XCXIDBAFBZPZMD-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.14
• 重原子数：
  52.0
• 可旋转键数：
  6.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.25
• 拓扑面积：
  177.44
• 氢给体数：
  1.0
• 氢受体数：
  11.0

反应信息

• 作为反应物：
  描述：

  2',7'-difluoro-5-((4-nitrophenyl)sulfonamido)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl bis(2,2-dimethylpropanoate) 在 potassium carbonate 、 苯硫酚 、 potassium iodide 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 14.0h， 生成
  参考文献：
  名称：

  Improvement and Biological Applications of Fluorescent Probes for Zinc, ZnAFs

  摘要：

  The development and cellular applications of novel fluorescent probes for Zn2+, ZnAF-1F, and ZnAF-2F are described. Fluorescein is used as a fluorophore of ZnAFs, because its excitation and emission wavelengths are in the visible range, which minimizes cell damage and autofluorescence by excitation light. N,N-Bis(2-pyridylmethyl)ethylenediamine, used as an acceptor for Zn2+, is attached directly to the benzoic acid moiety of fluorescein, resulting in very low quantum yields of 0.004 for ZnAF-1F and 0.006 for ZnAF-2F under physiological conditions (pH 7.4) due to the photoinduced electron-transfer mechanism. Upon the addition of Zn2+, the fluorescence intensity is quickly increased up to 69-fold for ZnAF-1F and 60-fold for ZnAF-2F. Apparent dissociation constants (K-d) are in the nanomolar range, which affords sufficient sensitivity for biological applications. ZnAFs do not fluoresce in the presence of other biologically important cations such as Ca2+ and Mg2+, and are insensitive to change of pH. The complexes with Zn2+ of previously developed ZnAFs, ZnAF-1, and ZnAF-2 decrease in fluorescence intensity below pH 7.0 owing to protonation of the phenolic hydroxyl group of fluorescein, whose pK(a) value is 6.2. On the other hand, the Zn2+ complexes of ZnAF-1 F and ZnAF-2F emit stable fluorescence around neutral and slightly acidic conditions because the pKa values are shifted to 4.9 by substitution of electron-withdrawing fluorine at the ortho position of the phenolic hydroxyl group. For application to living cells, the diacetyl derivative of ZnAF-2F, ZnAF-2F DA, was synthesized. ZnAF-2F DA can permeate through the cell membrane, and is hydrolyzed by esterase in the cytosol to yield ZnAF-2F, which is retained in the cells. Using ZnAF-2F DA, we could measure the changes of intracellular Zn2+ in cultured cells and hippocampal slices.

  DOI：

  10.1021/ja025567p
• 作为产物：
  描述：

  4-硝基邻苯二甲酸酐 、 三甲基乙酸酐 、 4-氟间苯二酚 、 对硝基苯磺酰氯 以2.9 g的产率得到2',7'-difluoro-5-((4-nitrophenyl)sulfonamido)-3-oxo-3H-spiro[isobenzofuran-1,9'-xanthene]-3',6'-diyl bis(2,2-dimethylpropanoate)
  参考文献：
  名称：

  Improvement and Biological Applications of Fluorescent Probes for Zinc, ZnAFs

  摘要：

  The development and cellular applications of novel fluorescent probes for Zn2+, ZnAF-1F, and ZnAF-2F are described. Fluorescein is used as a fluorophore of ZnAFs, because its excitation and emission wavelengths are in the visible range, which minimizes cell damage and autofluorescence by excitation light. N,N-Bis(2-pyridylmethyl)ethylenediamine, used as an acceptor for Zn2+, is attached directly to the benzoic acid moiety of fluorescein, resulting in very low quantum yields of 0.004 for ZnAF-1F and 0.006 for ZnAF-2F under physiological conditions (pH 7.4) due to the photoinduced electron-transfer mechanism. Upon the addition of Zn2+, the fluorescence intensity is quickly increased up to 69-fold for ZnAF-1F and 60-fold for ZnAF-2F. Apparent dissociation constants (K-d) are in the nanomolar range, which affords sufficient sensitivity for biological applications. ZnAFs do not fluoresce in the presence of other biologically important cations such as Ca2+ and Mg2+, and are insensitive to change of pH. The complexes with Zn2+ of previously developed ZnAFs, ZnAF-1, and ZnAF-2 decrease in fluorescence intensity below pH 7.0 owing to protonation of the phenolic hydroxyl group of fluorescein, whose pK(a) value is 6.2. On the other hand, the Zn2+ complexes of ZnAF-1 F and ZnAF-2F emit stable fluorescence around neutral and slightly acidic conditions because the pKa values are shifted to 4.9 by substitution of electron-withdrawing fluorine at the ortho position of the phenolic hydroxyl group. For application to living cells, the diacetyl derivative of ZnAF-2F, ZnAF-2F DA, was synthesized. ZnAF-2F DA can permeate through the cell membrane, and is hydrolyzed by esterase in the cytosol to yield ZnAF-2F, which is retained in the cells. Using ZnAF-2F DA, we could measure the changes of intracellular Zn2+ in cultured cells and hippocampal slices.

  DOI：

  10.1021/ja025567p