5'-O-dimethoxytrityl-O6-cyanoethyl-N2-isobutyrylguanosine | 90662-86-5

• 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: 5'-O-dimethoxytrityl-O6-cyanoethyl-N2-isobutyrylguanosine
• 英文别名: 2-N-isobutyryl-6-O-(cyanoethyl)-5'-O-dimethoxytrityl-2'-deoxyguanosine；5'-O-dimethoxytrityl-O⁶-cyanoethyl-N²-isobutyrylguanosine
• CAS: 90662-86-5
• 化学式: C₃₈H₄₀N₆O₇
• 分子量: 692.772
• InChiKey: SHHMBRIZAQRPAY-DCMFLLSESA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.39
• 重原子数：
  51.0
• 可旋转键数：
  14.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.34
• 拓扑面积：
  162.87
• 氢给体数：
  2.0
• 氢受体数：
  12.0

反应信息

• 作为反应物：
  描述：

  5'-O-dimethoxytrityl-O6-cyanoethyl-N2-isobutyrylguanosine 在 吡啶 、 三乙基硅烷 、 二氯乙酸 、 双(2-氧代-3-恶唑烷基)次磷酰氯 作用下， 以 二氯甲烷 为溶剂， 反应 0.28h， 生成
  参考文献：
  名称：

  Solid-Phase Synthesis of P-Boronated Oligonucleotides by the H-Boranophosphonate Method

  摘要：

  Recently, P-boronated oligonucleotides have been attracting much attention as potential therapeutic oligonucleotides. In this study, we developed H-boranophosphonate oligonucleotide bearing a borano group and hydrogen atom on the intemucleotidic phosphorus and demonstrated that this novel P-boronated oligonucleotide is a versatile precursor to various P-boronated oligonucleotides such as boranophosphate, boranophosphorothioate, and boranophosphoramidate. The method was also applicable to the synthesis of a locked nucleic acid-modified boranophosphate oligonucleotide, which exhibited a dramatically enhanced affinity to complementary oligonucleotides.

  DOI：

  10.1021/jo500185b
• 作为产物：
  描述：

  N2-异丁酰基-2′-脱氧鸟苷 在 咪唑 、 4-二甲氨基吡啶 、 2,4,6-三异丙基苯磺酰氯 、 氢氟酸 、 四丁基氟化铵 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 三乙胺 、 三甲胺 作用下， 以 吡啶 、 二氯甲烷 为溶剂， 反应 28.67h， 生成 5'-O-dimethoxytrityl-O6-cyanoethyl-N2-isobutyrylguanosine
  参考文献：
  名称：

  嘌呤2-氨基对DNA构象和稳定性的影响-II：d [CGT（2-NH 2）ACG]，d [CGU（2-NH 2）ACG]和d [CGT的合成和物理表征（2-NH 2）AT（2-NH 2）ACG]

  摘要：

  据报道，由2'-脱氧鸟苷合成了N-保护的2-氨基-2'-脱氧腺苷（dA'）衍生物。描述了几种含有这种修饰核苷的寡聚脱氧核苷酸的合成，以及通过熔解研究和CD构象分析的物理表征。如所预期的，看到2-氨基基团增加了双链体的稳定性。尽管发现序列d（TA'）3经历了盐诱导的构象转变，但是诸如d（CGTA'CG）的混合序列却没有表现出这种行为。这些序列中存在的所有鸟嘌呤残基均为O 6用氰基乙基或4-硝基苯基乙基进行保护，以消除鸟嘌呤在磷酸化和缩合反应中的降解。描述了引入和除去这些O 6保护基的方法。

  DOI：

  10.1016/0040-4020(84)85098-x

文献信息

• An Oxazaphospholidine Approach for the Stereocontrolled Synthesis of Oligonucleoside Phosphorothioates
  作者：Natsuhisa Oka、Takeshi Wada、Kazuhiko Saigo

  DOI：10.1021/ja034502z

  日期：2003.7.1

  diastereoselectivity. After sulfurization and deprotection, diastereopure (R(p))- and (S(p))-dinucleoside phosphorothioates were obtained in excellent yields. The present methodology was also applied to the solid-phase synthesis of stereoregulated PS-ODNs. all-(R(p))-[T(PS)](3)T, all-(S(p))-[T(PS)](3)T, all-(R(p))-d[G(PS)A(PS)C(PS)]T, and all-(R(p))-[T(PS)](9)T were synthesized on a highly cross-linked polystyrene resin

  描述了使用核苷 3'-O-oxazaphospholidine 衍生物作为单体单元的低聚脱氧核糖核苷硫代磷酸酯 (PS-ODNs) 的立体控制合成。2-Chloro-1,3,2-oxazaphospholidine 衍生物由六种对映纯的 1,2-氨基醇制备而成，用于 5'-O-保护核苷的磷酸化反应。对这些反应的详细研究表明，该反应的非对映选择性取决于对映体纯 1,2-氨基醇的结构、反应温度和用作 HCl 清除剂的胺。此外，还对 2-氯氧氮杂磷脂衍生物进行了从头算分子轨道计算，以阐明这些非对映选择性磷酸化反应的机理。发现磷原子上的 2-氯-5-苯基氧氮杂磷脂衍生物的 LUMO 几乎与 P-Cl 键正交。该 LUMO 可能参与主要保留 P 构型的磷酸化反应。开发了一系列二烷基（氰甲基）铵盐，并将其用作非对映纯核苷 3'-O-oxazaphospholidines 与 3'-O-保护的核苷的缩合
• Nonoxidative chlorination of dialkyl phosphonates to dialkyl phosphorochloridites. A new approach to oligonucleotide synthesis
  作者：Takeshi Wada、Ryohei Kato、Tsujiaki Hata

  DOI：10.1021/jo00003a056

  日期：1991.2

  Several dialkyl phosphonates and alkyl nucleoside 3'-phosphonates were transformed into the corresponding highly reactive phosphorochloridites without oxidation of phosphorus by use of tris(2,4,6-tribromophenoxy)-dichlorophosphorane (BDCP) as a chlorinating reagent. The reaction was applied to internucleotidic bond formation. 2-Cyanoethyl and methyl nucleoside 3'-phosphonates were prepared in high yields and were stable enough to be used as starting materials in oligonucleotide synthesis. Examination of dodecathymidylate synthesis on a polymer support, using 2-cyanoethyl or methyl nucleoside 3'-phosphonate as building blocks, showed that the 2-cyanoethyl nucleoside 3'-phosphonate was more effective.