5'-O-(tert-butyldimethylsilyl)-2,3'-anhydrothymidine | 166955-24-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二嗪类
• 英文名称: 5'-O-(tert-butyldimethylsilyl)-2,3'-anhydrothymidine
• CAS: 166955-24-4
• 化学式: C₂₆H₃₀N₂O₄Si
• 分子量: 462.621
• InChiKey: NDIYNYFBBWKXLG-DNVJHFABSA-N

物化性质

• 沸点：
  528.7±60.0 °C(Predicted)
• 密度：
  1.21±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.18
• 重原子数：
  33.0
• 可旋转键数：
  5.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.38
• 拓扑面积：
  62.58
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  5'-O-(tert-butyldimethylsilyl)-2,3'-anhydrothymidine 在 sodium hydroxide 作用下， 以 乙醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 5.0h， 生成 3'-deoxy-3'-thio-5'-O-(tert-butyldimethylsilyl)thymidine
  参考文献：
  名称：

  Incorporation of a S-glycosidic linkage into a glyconucleoside changes the conformational preference of both furanose sugars

  摘要：

  A glyconucleoside containing a thioglycoside linkage, namely 1-(3-S-beta-D-ribofuranosyl-2,3-dideoxy-3-thio-beta-D-ribofuranosyl)-thymine, has been prepared through condensation of a suitably protected derivative of 3'-thiothymidine with an activated ribose sugar. NMR has been used to study the conformation of the S-disaccharide and the unmodified O-disaccharide. A full pseudorotational analysis showed that for the S-disaccharide, the ribose and deoxy ribose sugars have a preference for the south and north pucker, respectively; which is the reverse of what is seen for the O-disaccharide. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2006.11.007
• 作为产物：
  描述：

  5'-O-tert-butyldiphenylsilylthymidine 在 偶氮二甲酸二异丙酯 、 三苯基膦 作用下， 以 乙酸乙酯 为溶剂， 以85%的产率得到5'-O-(tert-butyldimethylsilyl)-2,3'-anhydrothymidine
  参考文献：
  名称：

  Incorporation of a S-glycosidic linkage into a glyconucleoside changes the conformational preference of both furanose sugars

  摘要：

  A glyconucleoside containing a thioglycoside linkage, namely 1-(3-S-beta-D-ribofuranosyl-2,3-dideoxy-3-thio-beta-D-ribofuranosyl)-thymine, has been prepared through condensation of a suitably protected derivative of 3'-thiothymidine with an activated ribose sugar. NMR has been used to study the conformation of the S-disaccharide and the unmodified O-disaccharide. A full pseudorotational analysis showed that for the S-disaccharide, the ribose and deoxy ribose sugars have a preference for the south and north pucker, respectively; which is the reverse of what is seen for the O-disaccharide. (c) 2006 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2006.11.007

文献信息

• Reverse-direction (5′→3′) synthesis of oligonucleotides containing a 3′-S-phosphorothiolate linkage and 3′-terminal 3′-thionucleosides
  作者：James W. Gaynor、Michael M. Piperakis、Julie Fisher、Richard Cosstick

  DOI：10.1039/b923545k

  日期：——

  5′-oxygen to the 3′-thiol function. 5′→3′ Synthesis of oligonucleotides gave relatively poor yields for the internal incorporation of 3′-thionucleosides [to give a 3′-S-phosphorothiolate (3′-SP) linkage] and multiple 3′-SP modifications could not be introduced by this method. However, the reverse direction approach provided an efficient route to oligonucleotides terminating with a 3′-thionucleoside

  含3'- thionucleosides寡脱氧核苷酸的合成已使用反向方向（5'→3'）的方法探讨的基础上，其含有一个或三苯甲基二甲氧基三苯甲基保护的核苷单体3'-硫醇和一个5'- ø -亚磷酰胺。这些单体相对容易制备，因为基于三苯甲基的保护基优先于5'-羟基以3'-硫醇选择性引入。作为替代方法，可以诱导三苯甲基从5'-氧迁移至3'-硫醇功能。5'→3'的合成寡核苷酸的合成相对内部3'-thionucleosides [产生3'- S]的收率相对较低-硫代磷酸酯（3'-SP）键]和多个3'-SP修饰不能通过该方法引入。然而，反向方法提供了以3'-硫代核苷终止的寡核苷酸的有效途径。这些硫封端的低聚物的直接合成以前没有报道，并且所描述的方法适用于衍生自胸腺嘧啶，胞嘧啶和腺嘌呤的2'-脱氧-3'-硫核苷。