1-{5-O-(4-monomethoxytrityl)-2-O-[2-(4-nitrophenyl)ethoxycarbonyl]-α-D-arabinofuranosyl}thymine | 917376-55-7

• 分子结构分类: 有机化合物 - 苯类化合物 - 三苯基化合物
• 英文名称: 1-{5-O-(4-monomethoxytrityl)-2-O-[2-(4-nitrophenyl)ethoxycarbonyl]-α-D-arabinofuranosyl}thymine
• CAS: 917376-55-7
• 化学式: C₃₉H₃₇N₃O₁₁
• 分子量: 723.736
• InChiKey: NKVSAHPQELKNAA-RJUWYKDSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.79
• 重原子数：
  53.0
• 可旋转键数：
  13.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  181.45
• 氢给体数：
  2.0
• 氢受体数：
  12.0

反应信息

• 作为反应物：
  描述：

  1-{5-O-(4-monomethoxytrityl)-2-O-[2-(4-nitrophenyl)ethoxycarbonyl]-α-D-arabinofuranosyl}thymine 、 双(二异丙基氨基)(2-氰基乙氧基)膦 在 四氮唑 作用下， 以 乙腈 为溶剂， 以91%的产率得到1-{5-O-(4-monomethoxytrityl)-2-O-[2-(4-nitrophenyl)ethoxycarbonyl]-α-D-arabinofuranosyl}thymine-3-(2-cyanoethyl-N,N-diisopropyl)phosphoramidite
  参考文献：
  名称：

  Nucleotides. LXXIV Synthesis of a-D-Arabino-oligonucleotides

  摘要：

  The 5 alpha-D-arabinofuranosylnucleosides alpha-araU (15), alpha-araT (18), alpha-araC (22), alpha-araA (25), and alpha-araG (28) have been synthesized by the modified silyl-method. The amino groups at the nucleobases and the 2'-hydroxy group at the sugar moiety were protected by the 2-(4-nitro-phenyl) ethoxycarbonyl (npeoc) group (37-40) and the amide function in alpha-araG was additionally blocked by the 2-(4-nitrophenyl)ethyl group (63) to improve solubility in organic solvents. Mono-and dimethoxytritylation of the 5'-OH group was performed in the usual manner to give 41-48, 64, and 65 in high yields and further substitution of the 3'-OH group led to the monomeric building blocks 66-75 as well as the 3'-O-succinoyl derivatives 76-85 functioning as starting units in solid-support oligonucleotide synthesis. A large number of oligo-alpha-arabinonucleotides have been prepared on modified CPG-material applying the npeoc/npe strategy as a very efficient synthetic tool for highly purified, homogenous oligomers. Hybridizations between alpha-arabinonucleotide strands revealed in analogy to earlier findings an antiparallel orientation whereas the combination of an oligo-alpha-D-arabinonucleotide with a complementary oligo-2'-deoxy-beta-D-ribofuranosylnucleotide showed base-pairing only if a parallel polarity was present. The advantages in oligo-alpha-arabinonucleotide synthesis were furthermore demonstrated by the synthesis of the t alpha-ANA(his) a structural analog of the natural tRNA(his) of the phage T5.

  DOI：

  10.1080/15257770500267113
• 作为产物：
  描述：

  胸腺嘧啶 在 吡啶 、 4-二甲氨基吡啶 、 硫酸氢铵 、 trimethylsilyl trifluorosulfonate 、 四丁基氟化铵 、 sodium methylate 、 溶剂黄146 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 、 乙腈 为溶剂， 反应 76.75h， 生成 1-{5-O-(4-monomethoxytrityl)-2-O-[2-(4-nitrophenyl)ethoxycarbonyl]-α-D-arabinofuranosyl}thymine
  参考文献：
  名称：

  Nucleotides. LXXIV Synthesis of a-D-Arabino-oligonucleotides

  摘要：

  The 5 alpha-D-arabinofuranosylnucleosides alpha-araU (15), alpha-araT (18), alpha-araC (22), alpha-araA (25), and alpha-araG (28) have been synthesized by the modified silyl-method. The amino groups at the nucleobases and the 2'-hydroxy group at the sugar moiety were protected by the 2-(4-nitro-phenyl) ethoxycarbonyl (npeoc) group (37-40) and the amide function in alpha-araG was additionally blocked by the 2-(4-nitrophenyl)ethyl group (63) to improve solubility in organic solvents. Mono-and dimethoxytritylation of the 5'-OH group was performed in the usual manner to give 41-48, 64, and 65 in high yields and further substitution of the 3'-OH group led to the monomeric building blocks 66-75 as well as the 3'-O-succinoyl derivatives 76-85 functioning as starting units in solid-support oligonucleotide synthesis. A large number of oligo-alpha-arabinonucleotides have been prepared on modified CPG-material applying the npeoc/npe strategy as a very efficient synthetic tool for highly purified, homogenous oligomers. Hybridizations between alpha-arabinonucleotide strands revealed in analogy to earlier findings an antiparallel orientation whereas the combination of an oligo-alpha-D-arabinonucleotide with a complementary oligo-2'-deoxy-beta-D-ribofuranosylnucleotide showed base-pairing only if a parallel polarity was present. The advantages in oligo-alpha-arabinonucleotide synthesis were furthermore demonstrated by the synthesis of the t alpha-ANA(his) a structural analog of the natural tRNA(his) of the phage T5.

  DOI：

  10.1080/15257770500267113