phenyl 3,6-bis-O-(tert-butyldimethylsilyl)-1-thio-β-D-glucopyranoside

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: phenyl 3,6-bis-O-(tert-butyldimethylsilyl)-1-thio-β-D-glucopyranoside
• 英文别名: 3,6-bis(t-BuMe2Si)-1-phenylthio-β-D-glucopyranoside；TBDMS(-3)[TBDMS(-6)]Glc(b)-SPh；(2R,3R,4S,5R,6S)-4-[tert-butyl(dimethyl)silyl]oxy-2-[[tert-butyl(dimethyl)silyl]oxymethyl]-6-phenylsulfanyloxane-3,5-diol
• 化学式: C₂₄H₄₄O₅SSi₂
• 分子量: 500.847
• InChiKey: ZMXPEXHGFQHOLH-YXIAPDDASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.64
• 重原子数：
  32
• 可旋转键数：
  9
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  93.4
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  phenyl 3,6-bis-O-(tert-butyldimethylsilyl)-1-thio-β-D-glucopyranoside 在 吡啶 、 sodium hydride 、 对甲苯磺酸 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 77.0h， 生成 phenyl 3,6-anhydro-2,4-di-O-benzyl-1-thio-β-D-glucopyranoside
  参考文献：
  名称：

  Conformationally Armed 3,6-Tethered Glycosyl Donors: Synthesis, Conformation, Reactivity, and Selectivity

  摘要：

  The reactivity and selectivity of 3,6-tethered glycosyl donors have been studied using acceptors with different steric and electronic characteristics. Eight (four anomeric pairs) 3,6-bridged-glycosyl donors were synthesized in high yields from their common parent sugars. The glycosylation properties were tested using at least three different acceptors and several promoter systems. Thiophenyl 2,4-di-O-benzyl-3,6-O-(di-tert-butylsilylene)-alpha-D-glucopyranoside gave alpha/beta mixtures with standard NIS/TfOH mediated activation, whereas the corresponding fluoride was found to be highly beta-selective, when using SnCl2/AgE(C6F5)(4) as the promoter system. Mannosyl donors were highly alpha-selective despite the altered conformation. Galactosylations using NIS/TfOH were generally alpha-selective, but more beta-selective using the galactosyl fluoride and depending on the acceptor used. Thiophenyl 2-azido-2-deoxy-4-O-benzyl-3,6-O-(di-tert-butylsilylene)-alpha-D-glucopyranoside was found to be alpha-selective. The reactivity of the donors was investigated using competition experiments, and some but not all were found to be highly reactive. Generally it was found that the alpha-thioglycosides were significantly more reactive than the beta; this difference in reactivity was not found for 3,6-anhydro-, armed-(benzylated), or the classic super armed (silylated) donors. A mechanism supporting the unusual observations has been suggested.

  DOI：

  10.1021/jo4012464
• 作为产物：
  描述：

  (2R,3R,4S,5R,6S)-2-(acetoxymethyl)-6-(phenylthio)tetrahydro-2H-pyran-3,4,5-triyl triacetate 在 咪唑 、 sodium 作用下， 以 甲醇 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 phenyl 3,6-bis-O-(tert-butyldimethylsilyl)-1-thio-β-D-glucopyranoside
  参考文献：
  名称：

  构象可切换的糖基供体。

  摘要：

  当与Zn2 +离子形成1：1配合物时，被3-OH和6-OH或2-OH和4-OH上的2,2'-联吡啶部分官能化的糖基供体发生构象变化。锌配合物的吡喃糖苷环采用富轴向偏斜的船形构象。通过在存在或不存在Zn2 +离子的情况下进行一系列糖基化反应，研究了两个糖基供体的反应性。这些糖基化提示结合Zn2 +时反应性降低。因此，使用第三糖基供体研究了结合Zn 2+的构象效应，该第三糖基供体在结合Zn 2+时不能经历构象变化。从竞争实验中观察到，与不能进行构象变化的糖基供体相比，结合诱导的构象变化稍微增加了反应性。

  DOI：

  10.1021/acs.joc.9b00830

文献信息

• Simultaneous regioselective protection of phenyl 1-thioglucosides at the C-3 and C-6 or at the C-2 and C-6 hydroxy groups
  作者：Yasunori Ikeda、Ken Furukawa、Hidetoshi Yamada

  DOI：10.1016/s0008-6215(02)00168-4

  日期：2002.9

  Simultaneous regioselective 3,6- or 2,6-selective protection of 1-thio-beta- or alpha-D-glucopyranosides is described. The C-3 and C-6 hydroxy groups of the beta-thioglucoside were selectively protected with triisopropylsilyl or tert-butyldiphenylsilyl trifluoromethanesulfonate. The C-2 and C-6 hydroxy groups of the a-thioglucoside were selectively protected with tert-butyldiphenylsilyl trifluoromethanesulfonate. (C) 2002 Elsevier Science Ltd. All rights reserved.
• A Catalytic Synthesis of Thiosilanes and Silthianes:  Palladium Nanoparticle-Mediated Cross-Coupling of Silanes with Thio Phenyl and Thio Vinyl Ethers through Selective Carbon−Sulfur Bond Activation
  作者：Mee-Kyung Chung、Marcel Schlaf

  DOI：10.1021/ja049386u

  日期：2004.6.1

  Palladium nanoparticles generated in situ from N,N-dimethyl-acetamide (DMA) solutions of PdX2 (X = Cl-, OAc-, OCOCF3-) or Pd-2(dba)(3) by reduction with alkyl silanes R3SiH (R = Me, Et, i-Pr, t-Bu) are selective catalysts for the cross-coupling of the silanes R3SiH with phenyl and vinyl thioethers forming the corresponding thiosilanes and silthianes in high yields and under mild conditions. The method is applicable to phenyl thioglycosides, giving access to thiosilyl glycosides a new class of sugar derivatives.
• Conformationally Switchable Glycosyl Donors
  作者：Thomas Holmstrøm、Christian Marcus Pedersen

  DOI：10.1021/acs.joc.9b00830

  日期：2019.11.1

  Glycosyl donors functionalized with 2,2'-bipyridine moieties on the 3-OH and 6-OH or the 2-OH and 4-OH undergo a conformational change when forming 1:1 complexes with Zn2+ ions. The pyranoside ring of the zinc complexes adopted axial-rich skew boat conformations. The reactivities of the two glycosyl donors were investigated by performing a series of glycosylations in the presence or absence of Zn2+

  当与Zn2 +离子形成1：1配合物时，被3-OH和6-OH或2-OH和4-OH上的2,2'-联吡啶部分官能化的糖基供体发生构象变化。锌配合物的吡喃糖苷环采用富轴向偏斜的船形构象。通过在存在或不存在Zn2 +离子的情况下进行一系列糖基化反应，研究了两个糖基供体的反应性。这些糖基化提示结合Zn2 +时反应性降低。因此，使用第三糖基供体研究了结合Zn 2+的构象效应，该第三糖基供体在结合Zn 2+时不能经历构象变化。从竞争实验中观察到，与不能进行构象变化的糖基供体相比，结合诱导的构象变化稍微增加了反应性。
• Conformationally Armed 3,6-Tethered Glycosyl Donors: Synthesis, Conformation, Reactivity, and Selectivity
  作者：Mads Heuckendorff、Christian Marcus Pedersen、Mikael Bols

  DOI：10.1021/jo4012464

  日期：2013.7.19

  The reactivity and selectivity of 3,6-tethered glycosyl donors have been studied using acceptors with different steric and electronic characteristics. Eight (four anomeric pairs) 3,6-bridged-glycosyl donors were synthesized in high yields from their common parent sugars. The glycosylation properties were tested using at least three different acceptors and several promoter systems. Thiophenyl 2,4-di-O-benzyl-3,6-O-(di-tert-butylsilylene)-alpha-D-glucopyranoside gave alpha/beta mixtures with standard NIS/TfOH mediated activation, whereas the corresponding fluoride was found to be highly beta-selective, when using SnCl2/AgE(C6F5)(4) as the promoter system. Mannosyl donors were highly alpha-selective despite the altered conformation. Galactosylations using NIS/TfOH were generally alpha-selective, but more beta-selective using the galactosyl fluoride and depending on the acceptor used. Thiophenyl 2-azido-2-deoxy-4-O-benzyl-3,6-O-(di-tert-butylsilylene)-alpha-D-glucopyranoside was found to be alpha-selective. The reactivity of the donors was investigated using competition experiments, and some but not all were found to be highly reactive. Generally it was found that the alpha-thioglycosides were significantly more reactive than the beta; this difference in reactivity was not found for 3,6-anhydro-, armed-(benzylated), or the classic super armed (silylated) donors. A mechanism supporting the unusual observations has been suggested.