3,4,6-tri-O-benzyl-β-D-glucopyranosyl fluoride | 74372-92-2

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 3,4,6-tri-O-benzyl-β-D-glucopyranosyl fluoride
• 英文别名: (2S,3R,4R,5R,6R)-2-fluoro-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-ol
• CAS: 74372-92-2
• 化学式: C₂₇H₂₉FO₅
• 分子量: 452.523
• InChiKey: SQGDIWBZBSPKMC-RFNQJFSXSA-N

物化性质

• 熔点：
  80-82 °C
• 沸点：
  584.8±50.0 °C(Predicted)
• 密度：
  1.23±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4
• 重原子数：
  33
• 可旋转键数：
  10
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  57.2
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  3,4,6-tri-O-benzyl-β-D-glucopyranosyl fluoride 在 potassium tert-butylate 作用下， 以 苯 为溶剂， 生成 3,4,6-tri-O-benzyl-D-glucal epoxide
  参考文献：
  名称：

  Synthesis of 1,2-anhydro-3,4,6-tri-O-benzyl-α-d-glucopyranose

  摘要：

  DOI：

  10.1016/s0008-6215(00)85689-x
• 作为产物：
  描述：

  3,4,6-tri-O-benzyl-D-glucal epoxide 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 12.0h， 生成 3,4,6-tri-O-benzyl-β-D-glucopyranosyl fluoride
  参考文献：
  名称：

  First Synthesis of a Digitalis Saponin. Demonstration of the Scope and Limitations of a Convergent Scheme for Branched Oligosaccharide Synthesis by the Logic of Glycal Assembly

  摘要：

  The synthesis of complex glycosides, with branching at C-2, is demonstrated. The key element involves the use of a 1,2-oxirane donor. Upon glycosylation, a C-2 hydroxyl is exposed to serve as the acceptor in the next glycosylation. Branching at C-2 with a beta-linked glycoside at C-1 was not achievable with epoxy 23 donor, but was accomplished with fluoro donor 25, in turn derived from 23. (See 19 + 18 --> 20; 20 + 25 --> 26. Compound 26 was deprotected to complete the first total synthesis of a natural saponin, desgalactotigonin (3)). A limitation in stereospecifity in the use of donor 23 and monoprotected galactal acceptor 28 was also encountered.

  DOI：

  10.1021/ja00126a010

文献信息

• Synthesis of Mannosidase-Stable Man₃ and Man₄ Glycans Containing S-linked Manα1→2Man Termini
  作者：Mahesh Neralkar、Leiming Tian、Richard L. Redman、Isaac J. Krauss

  DOI：10.1021/acs.orglett.1c00726

  日期：2021.4.16

  of interest as HIV vaccine components, but they are subject to mannosidase degradation in vivo. Herein, we report the synthesis of oligosaccharides containing a thio linkage at the nonreducing end. A thio-linked dimannose donor participates in highly stereoselective glycosylations to afford trimannose and tetramannose fragments. Saturation transfer difference nuclear magnetic resonance (STD NMR) studies

  寡甘露糖聚糖作为 HIV 疫苗成分是令人感兴趣的，但它们在体内会发生甘露糖苷酶降解。在此，我们报告了在非还原端含有硫键的寡糖的合成。硫键连接的二甘露糖供体参与高度立体选择性糖基化以提供三甘露糖和四甘露糖片段。饱和转移差异核磁共振 (STD NMR) 研究表明，这些聚糖被 HIV 抗体 2G12 识别，并且我们确认还原末端 S 键对x 具有完全的稳定性。manihotis甘露糖苷酶。
• Indium(III) Iodide-Catalyzed Stereoselective Synthesis of β-Glucopyranosides by Using a Glucosyl Fluoride Donor with 2-O-Benzoyl-3,4,6-Tri-O-Benzyl Protection
  作者：Lan Yu、Weihua Xue、Teng Ma、Changwei Li、Zhan-xin Zhang、Zhaoyan Wang

  DOI：10.1055/s-0036-1589121

  日期：2017.12

  a novel protocol for glucosylation by adopting a glucosyl fluoride donor with 2-O-benzoyl-3,4,6-tri-O-benzyl protection. The protocol is useful for the ready assembly of β-linked functional glycoconjugates, and the reaction accommodates a broad range of substrates. Conveniently, water-tolerant and commercially available InI3 is used as a catalyst, and no other additional reagent is required. The method

  我们通过采用具有 2-O-benzoyl-3,4,6-tri-O-benzyl 保护的葡糖基氟供体开发了一种新的糖基化方案。该协议可用于 β 连接的功能性糖缀合物的现成组装，并且该反应适用于广泛的底物。方便的是，耐水和市售的 InI3 用作催化剂，不需要其他额外的试剂。该方法涉及一个有趣的葡萄糖酰氟活化过程，特别是允许立体选择性构建带有选择性可去除的 2-O-苯甲酰基的部分苄基化吡喃葡萄糖苷，其作为糖基受体具有巨大的潜力，可进一步构建 1,2-糖苷键.
• Stereospecific Synthesis of 1,2-<i>cis</i> Glycosides by Allyl-Mediated Intramolecular Aglycon Delivery. 2. The Use of Glycosyl Fluorides
  作者：Ian Cumpstey、Antony J. Fairbanks、Alison J. Redgrave

  DOI：10.1021/ol016175a

  日期：2001.7.1

  [reaction: see text] Stereospecific 1,2-cis glycosylation of 2-O-allyl-protected glucosyl and mannosyl fluorides via a sequence of allyl isomerization, N-iodosuccinimide-mediated tethering, and intramolecular aglycon delivery (IAD) is reported. The use of fluoride as anomeric leaving group is advantageous in that tethering efficiencies can be increased for hindered aglycon alcohols by the use of extended reaction

  [反应：见正文]据报道，通过烯丙基异构化，N-碘代琥珀酰亚胺介导的束缚和分子内糖苷配基递送（IAD）的序列，2-O-烯丙基保护的葡萄糖基和甘露糖基氟化物的立体特异性1,2-顺式糖基化。使用氟化物作为端基异构离去基团是有利的，因为通过使用延长的反应时间而没有竞争性端基异构活化，可以提高对受阻糖苷醇的束缚效率。分子内糖基化以完全立体选择性的方式提供所需的α-葡萄糖苷和β-甘露糖苷。
• Allyl Protecting Group Mediated Intramolecular Aglycon Delivery (IAD) of Glycosyl Fluorides
  作者：Ian Cumpstey、Antony J. Fairbanks、Alison J. Redgrave

  DOI：10.1007/s007060200020

  日期：2002.4.1

  sequence of allyl isomerization, N-iodosuccinimide mediated tethering, and intramolecular aglycon delivery (IAD). Fluoride is advantageous as an anomeric leaving group since extended reaction times can be employed to tether hindered aglycon alcohols without competitive anomeric activation. Tin(II) chloride mediated intramolecular glycosylation furnishes the desired α-glucosides and β-mannosides in an

  2-O-烯丙基保护的葡萄糖基和甘露糖基氟化物的 立体特异性1,2- 顺式 糖基化可以 通过 一系列烯丙基异构化，N-碘代琥珀酰亚胺介导的束缚和分子内糖苷配基递送（IAD）实现。氟化物作为异头离去基团是有利的，因为延长的反应时间可用于束缚受阻的糖苷配基醇而没有竞争性的异头活化。氯化锡（II）介导的分子内糖基化反应以完全立体选择性的方式提供了所需的α-葡萄糖苷和β-甘露糖苷。
• Fluoride Migration Catalysis Enables Simple, Stereoselective, and Iterative Glycosylation
  作者：Girish C. Sati、Joshua L. Martin、Yishu Xu、Tanmay Malakar、Paul M. Zimmerman、John Montgomery

  DOI：10.1021/jacs.0c03165

  日期：2020.4.15

  that applies unique features of highly electrophilic boron catalysts, such as tris(pentafluorophenyl)borane, in addressing a number of the current limitations of methods in glycoside synthesis. This approach utilizes glycosyl fluoride donors and silyl ether acceptors while tolerating the Lewis basic environment found in carbohydrates. The method can be carried out at room temperature using air- and moisture

  寡糖和糖缀合物中糖苷键组装方面的挑战是实现糖科学进步的显着前景的瓶颈。在这里，我们报告了一种策略，该策略应用了高亲电性硼催化剂（如三（五氟苯基）硼烷）的独特特性，以解决目前糖苷合成方法的一些局限性。这种方法利用糖基氟供体和甲硅烷基醚受体，同时耐受碳水化合物中发现的路易斯碱性环境。该方法可以在室温下使用空气和水分稳定形式的催化剂进行，负载量低至 0.5 mol%。这些特征使得可以访问广泛的糖基化模式，包括葡萄糖、甘露糖和鼠李糖系列中的所有 C1-C2 立体化学关系。这种方法允许一锅、迭代糖基化直接从单糖构建块生成寡糖。这些进步使得能够从简单的构建单元中快速且通过实验直接制备复杂的寡糖单元。