2-[[(2S,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methylsulfanyl]acetic acid | 945420-87-1

• 分子结构分类: 有机化合物 - 核苷、核苷酸和类似物 - 2 '，5'-二脱氧核苷
• 英文名称: 2-[[(2S,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methylsulfanyl]acetic acid
• CAS: 945420-87-1
• 化学式: C₁₈H₃₀N₂O₆SSi
• 分子量: 430.597
• InChiKey: UXJVZTLUHSMBHG-BFHYXJOUSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.34
• 重原子数：
  28
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.72
• 拓扑面积：
  131
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  2-[[(2S,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methylsulfanyl]acetic acid 在 四氮唑 、 四丁基氟化铵 、 1-羟基苯并三唑 、 O-(1H-benzotriazol-1-yl)-N,N,N',N'-tetramethyluronium hexafluorophosphate 、 N,N-二异丙基乙胺 作用下， 以 四氢呋喃 、 二氯甲烷 、 乙腈 为溶剂， 反应 14.0h， 生成
  参考文献：
  名称：

  Synthesis and RNA Binding Selectivity of Oligonucleotides Modified with Five-Atom Thioacetamido Nucleic Acid Backbone Structures

  摘要：

  Convenient chemical synthesis and incorporation of dithymidine and thymidine-cytidine dimer blocks connected with a five-atom amide linker N3'-CO-CH2-S-CH2 into oligonucleotides (ONs) are reported. The UV-T-m experiments for binding affinities of these mixed backbone ONs with complementary DNA and RNA sequences revealed important results such as significantly higher RNA-binding selectivity as compared with complementary DNA. NMR studies of the dimer blocks suggested a marginal increase in the N-type sugar conformations over that of the native DNA.

  DOI：

  10.1021/ol070990u
• 作为产物：
  描述：

  5-O-(4-甲基苯基磺酰基)胸腺嘧啶脱氧核苷 在 咪唑 、 sodium hydroxide 、 sodium hydride 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 7.5h， 生成 2-[[(2S,3S,5R)-3-[tert-butyl(dimethyl)silyl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methylsulfanyl]acetic acid
  参考文献：
  名称：

  Synthesis and RNA Binding Selectivity of Oligonucleotides Modified with Five-Atom Thioacetamido Nucleic Acid Backbone Structures

  摘要：

  Convenient chemical synthesis and incorporation of dithymidine and thymidine-cytidine dimer blocks connected with a five-atom amide linker N3'-CO-CH2-S-CH2 into oligonucleotides (ONs) are reported. The UV-T-m experiments for binding affinities of these mixed backbone ONs with complementary DNA and RNA sequences revealed important results such as significantly higher RNA-binding selectivity as compared with complementary DNA. NMR studies of the dimer blocks suggested a marginal increase in the N-type sugar conformations over that of the native DNA.

  DOI：

  10.1021/ol070990u

文献信息

• Probing Binding Preferences of DNA and RNA: Backbone Chirality of Thioacetamido-Linked Nucleic Acids and <i>iso-</i>Thioacetamido-Linked Nucleic Acids to Differentiate DNA versus RNA Selective Binding
  作者：Sachin S. Gokhale、Khirud Gogoi、Vaijayanti A. Kumar

  DOI：10.1021/jo1014036

  日期：2010.11.5

  spectral differences for the dimer blocks were found to be identical for those found in phosphodiester linked ribo/xylo dimers, the 5-atom thioactamido linker could reverse the RNA binding selectivity to DNA binding selectivity by the change in configuration at the 3′-amino-substituted sugar.

  RNA和DNA双链体几何结构的细微差异可以通过硫代乙酰氨基连接的核酸和异硫代乙酰氨基连接的核酸修饰的低聚物的5原子硫代乙酰氨基连接子中3'-氨基官能团的立体化学变化来感知。与3'-核糖或木糖基氨基核苷的优选N型糖构象相反，在二聚体中发现了主要的S型糖构象。尽管发现二聚体嵌段的CD光谱差异与磷酸二酯连接的核糖/木二聚体中的CD光谱差异相同，但5原子硫代乙酰氨基接头可通过3'端构型的改变将RNA结合选择性逆转为DNA结合选择性。 -氨基取代的糖。