propargyl 2,3,4-tri-O-benzoyl-α-D-glucopyranoside | 1112986-42-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: propargyl 2,3,4-tri-O-benzoyl-α-D-glucopyranoside
• 英文别名: [(2R,3R,4S,5R,6S)-4,5-dibenzoyloxy-2-(hydroxymethyl)-6-prop-2-ynoxyoxan-3-yl] benzoate
• CAS: 1112986-42-1
• 化学式: C₃₀H₂₆O₉
• 分子量: 530.531
• InChiKey: CRUDVXLWAKRAEX-UKGKTARGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.2
• 重原子数：
  39
• 可旋转键数：
  12
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  118
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  methyl 3,4,6-tri-O-benzyl-2-deoxy-2-C-nitromethyl-β-D-glucopyranoside 、 propargyl 2,3,4-tri-O-benzoyl-α-D-glucopyranoside 在 gold(III) bromide 作用下， 以 乙腈 为溶剂， 反应 12.0h， 以55%的产率得到[(2R,3R,4S,5R,6S)-4,5-dibenzoyloxy-2-[[(2S,3R,4R,5S,6R)-3-(nitromethyl)-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxymethyl]-6-prop-2-ynoxyoxan-3-yl] benzoate
  参考文献：
  名称：

  2-C-支链碳水化合物的金催化反应：轻度糖苷化和选择性异构化

  摘要：

  2-C-支链甲基糖苷在金催化下与各种醇反应生成转糖基化产物。该方法适用于方便的双糖合成。在没有亲核试剂的情况下，会发生选择性异构化，从而首先获得 α-构型的 2-C-硝基甲基糖苷。结果对于金催化糖苷化的机制很有趣。

  DOI：

  10.1002/ejoc.201100134
• 作为产物：
  描述：

  propargyl α-D-glucopyranoside 在 吡啶 、 咪唑 、 4-二甲氨基吡啶 、 perchloric acid on silica gel 作用下， 以 乙腈 为溶剂， 反应 0.5h， 生成 propargyl 2,3,4-tri-O-benzoyl-α-D-glucopyranoside
  参考文献：
  名称：

  An efficient and recyclable catalyst for the cleavage of tert-butyldiphenylsilyl ethers

  摘要：

  An efficient, chemoselective, and environment-friendly method for the deprotection of tert-butyldiphenylsilyl ethers mediated by triflic acid supported on silica gel is reported. A wide range of tert-butyldiphenylsilyl ethers derived from carbohydrate and saponin residues can be smoothly cleaved in the presence of various types of other protecting groups in good to excellent yields in acetonitrile. This heterogeneous reaction does not require aqueous workup, and the supported catalyst can be readily recycled. (C) 2012 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2012.02.021

文献信息

• Propargyl/methyl furanosides as potential glycosyl donors
  作者：Srinivasa Rao Vidadala、Gaddamannugu Gayatri、G. Narahari Sastry、Srinivas Hotha

  DOI：10.1039/c1cc13134f

  日期：——

  Transfuranosylations are not well studied though many similar studies exist for transpyranosylation; herein, we report that propargyl/methyl D-ribf- and D-lyxf- give only 1,2-trans glycosides whereas D-araf- and D-xylf- result in a mixture of 1,2-trans and 1,2-cis glycosides; observed facts are rationalised by computational studies.

  尽管有许多类似的研究研究了吡喃糖基化，但对呋喃糖基化的研究还不够。在本文中，我们报道炔丙基/甲基D-ribf-和D-lyxf-仅产生1,2-反式糖苷，而D-araf-和D-xylf-产生1,2-反式和1,2-的混合物顺式苷；观察到的事实通过计算研究得以合理化。
• Orthogonal Activation of Propargyl and <i>n</i>-Pentenyl Glycosides and 1,2-Orthoesters
  作者：Srinivasa Rao Vidadala、Shivaji A. Thadke、Srinivas Hotha

  DOI：10.1021/jo901837z

  日期：2009.12.4

  propargyl and n-pentenyl glycosides has been identified. According to this methodology, n-pentenyl glycosides can be selectively activated with NIS/TMSOTf in the presence of either armed or disarmed propargyl O-glycosides. In addition, we report herein that propargyl 1,2-orthoesters can be selectively activated with AuBr3 in CH2Cl2 at room temperature in the presence of n-pentenyl glycosides. Similarly

  已经确定了具有炔丙基和正戊烯基糖苷的正交激活策略。根据该方法，在有或无武装的炔丙基O-糖苷存在下，可以用NIS / TMSOTf选择性地活化正戊烯基糖苷。另外，我们在本文中报道，在正戊烯基糖苷存在下，在室温下可以在CH 2 Cl 2中用AuBr 3选择性地活化炔丙基1，2-原酸酯。类似地，在炔丙基糖苷存在的情况下，戊烯基1,2-原酸酯可以被NIS / Yb（OTf）3选择性活化。
• H2SO4-silica-promoted ‘on-column’ removal of benzylidene, isopropylidene, trityl and tert-butyldimethylsilyl groups
  作者：Bimalendu Roy、Priya Verma、Balaram Mukhopadhyay

  DOI：10.1016/j.carres.2008.10.003

  日期：2009.1

  H2SO4-silica-promoted removal of benzylidene, isopropylidene, trityl and tert-butyldimethylsilyl groups from sugar derivatives was accomplished by following an 'on-column' Protocol in a virtually waste-free condition. (C) 2008 Elsevier Ltd. All rights reserved.
• Gold-Catalyzed Reactions of 2-C-Branched Carbohydrates: Mild Glycosidations and Selective Anomerizations
  作者：Srinivasa Rao Vidadala、Tukaram M. Pimpalpalle、Torsten Linker、Srinivas Hotha

  DOI：10.1002/ejoc.201100134

  日期：2011.5

  catalysis to transglycosylated products. The method is applicable for the convenient synthesis of disaccharides. Without nucleophile a selective anomerization occurs, giving first access to α-configured 2-C-nitromethyl glycosides. The results are interesting for the mechanism of gold-catalyzed glycosidations.

  2-C-支链甲基糖苷在金催化下与各种醇反应生成转糖基化产物。该方法适用于方便的双糖合成。在没有亲核试剂的情况下，会发生选择性异构化，从而首先获得 α-构型的 2-C-硝基甲基糖苷。结果对于金催化糖苷化的机制很有趣。
• An efficient and recyclable catalyst for the cleavage of tert-butyldiphenylsilyl ethers
  作者：Shiqiang Yan、Ning Ding、Wei Zhang、Peng Wang、Yingxia Li、Ming Li

  DOI：10.1016/j.carres.2012.02.021

  日期：2012.6

  An efficient, chemoselective, and environment-friendly method for the deprotection of tert-butyldiphenylsilyl ethers mediated by triflic acid supported on silica gel is reported. A wide range of tert-butyldiphenylsilyl ethers derived from carbohydrate and saponin residues can be smoothly cleaved in the presence of various types of other protecting groups in good to excellent yields in acetonitrile. This heterogeneous reaction does not require aqueous workup, and the supported catalyst can be readily recycled. (C) 2012 Elsevier Ltd. All rights reserved.