2-(cytosin-5-yl)-1-(3',5'-di(tert-butyldimethylsiloxy)-2'-deoxy-pentofuranosyl)ethyne | 1000889-62-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-(cytosin-5-yl)-1-(3',5'-di(tert-butyldimethylsiloxy)-2'-deoxy-pentofuranosyl)ethyne
• 英文别名: 6-amino-5-[2-[(4S,5R)-4-[tert-butyl(dimethyl)silyl]oxy-5-[[tert-butyl(dimethyl)silyl]oxymethyl]oxolan-2-yl]ethynyl]-1H-pyrimidin-2-one
• CAS: 1000889-62-2
• 化学式: C₂₃H₄₁N₃O₄Si₂
• 分子量: 479.767
• InChiKey: DHZYUDYNDPJYTA-JLMCIHFGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.27
• 重原子数：
  32
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.74
• 拓扑面积：
  95.2
• 氢给体数：
  2
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  2-(cytosin-5-yl)-1-(3',5'-di(tert-butyldimethylsiloxy)-2'-deoxy-pentofuranosyl)ethyne 在 溶剂黄146 作用下， 反应 72.0h， 以76.0 mg的产率得到2-(cytosin-5-yl)-1-(3',5'-dihydroxy-2'-deoxy-pentofuranosyl)ethyne
  参考文献：
  名称：

  Synthesis and DNA Incorporation of an Ethynyl-Bridged Cytosine C-Nucleoside as Guanosine Surrogate

  摘要：

  As a guanosine mimic that lacks the preference for syn or anti conformation a cytosine C-nucleoside was synthesized connecting the nucleobase at the anomeric center by an ethynyl linker. The key step was a Sonogashira cross coupling of 5-iodocytosine with 1 '-ethynyl-2 '-deoxyribose. The new C-nucleoside incorporated into G/C-alternating oligonucleotides emerged as guanosine substitute, however, with reduced duplex stability. B-Form DNA was strongly stabilized by the new surrogate even in typically Z-DNA forming sequences and in Z-form inducing environment.

  DOI：

  10.1021/ol7025334
• 作为产物：
  描述：

  5-碘胞核嘧啶 、 3',5'-di(tert-butyldimethylsiloxy)-1'-ethynyl-2'-deoxy-D-ribose 在 四(三苯基膦)钯 硫酸氢铵 、 六甲基二硅氮烷 、 copper(l) iodide 、 N,N-二异丙基乙胺 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 12.0h， 以55%的产率得到2-(cytosin-5-yl)-1-(3',5'-di(tert-butyldimethylsiloxy)-2'-deoxy-pentofuranosyl)ethyne
  参考文献：
  名称：

  Synthesis and DNA Incorporation of an Ethynyl-Bridged Cytosine C-Nucleoside as Guanosine Surrogate

  摘要：

  As a guanosine mimic that lacks the preference for syn or anti conformation a cytosine C-nucleoside was synthesized connecting the nucleobase at the anomeric center by an ethynyl linker. The key step was a Sonogashira cross coupling of 5-iodocytosine with 1 '-ethynyl-2 '-deoxyribose. The new C-nucleoside incorporated into G/C-alternating oligonucleotides emerged as guanosine substitute, however, with reduced duplex stability. B-Form DNA was strongly stabilized by the new surrogate even in typically Z-DNA forming sequences and in Z-form inducing environment.

  DOI：

  10.1021/ol7025334