p-cresyl 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-1-thio-α-D-arabinofuranoside | 932719-13-6

• 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: p-cresyl 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-1-thio-α-D-arabinofuranoside
• 英文别名: p-tolyl 2-O-benzyl-3,5-O-(di-tert-butylsilanediyl)-1-thio-α-D-arabinofuranoside；p-Tolyl 2-O-benzyl-3,5-O-(di-tert-butylsilanediyl)-1-thio-alpha-D-arabinofuranoside；(4aR,6R,7S,7aR)-2,2-ditert-butyl-6-(4-methylphenyl)sulfanyl-7-phenylmethoxy-4a,6,7,7a-tetrahydro-4H-furo[3,2-d][1,3,2]dioxasiline
• CAS: 932719-13-6
• 化学式: C₂₇H₃₈O₄SSi
• 分子量: 486.748
• InChiKey: QYBJYDHAYIQJAY-ZKGSSEMHSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.86
• 重原子数：
  33
• 可旋转键数：
  7
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.56
• 拓扑面积：
  62.2
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为反应物：
  描述：

  p-cresyl 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-1-thio-α-D-arabinofuranoside 在 1-(苯基亚硫酰基)哌啶 、 2,4,5-tri-tert-butylpyrimidine 、 4 A molecular sieve 作用下， 以 二氯甲烷 为溶剂， 反应 1.17h， 生成 methyl 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-α-D-arabinofuranoside
  参考文献：
  名称：

  对使用3,5- Ø亚苄基和3,5- Ö - （二-叔-butylsilylene）-2- Ø -benzylarabinothiofuranosides及其亚砜作为糖基供体的β阿拉伯呋喃糖苷的合成：激活方法的重要性

  摘要：

  A 2- ø -苄基-3,5- ø -亚苄基- α- d -thioarabinofuranoside通过在碱性条件下α，α-二溴甲苯相应二醇的反应来获得。在-55°C下用1-苯亚磺酰基哌啶或二苯亚砜和三氟甲磺酸酐在二氯甲烷中活化后，与糖基受体的反应可提供极少或没有选择性的异头混合物。在1-苯亚磺酰基哌啶或二苯基亚砜条件下，类似的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α- d-硫代阿拉伯呋喃糖苷也没有显示出明显的选择性。与N-碘代琥珀酰亚胺和三氟甲磺酸银表明，甲硅烷基乙缩醛具有中等至高的β-选择性，而与起始硫代糖苷的构型无关。用三氟甲磺酸酐活化后的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α-阿拉伯呋喃糖基亚砜供体也获得了高β-选择性。N获得的高β选择性-碘代琥珀酰亚胺/三氟甲磺酸银和亚砜的方法与常见的中间体一致，最有可能是氧杂碳鎓离子。用1-苯亚磺酰基

  DOI：

  10.1021/jo061440x
• 作为产物：
  描述：

  1,2,3,5-四-O-乙酰基-Alpha-D-阿拉伯呋喃糖 在 吡啶 、 4-二甲氨基吡啶 、 三氟化硼乙醚 、 sodium methylate 、 sodium hydride 作用下， 以 四氢呋喃 、 甲醇 、 二氯甲烷 为溶剂， 反应 18.0h， 生成 p-cresyl 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-1-thio-α-D-arabinofuranoside
  参考文献：
  名称：

  对使用3,5- Ø亚苄基和3,5- Ö - （二-叔-butylsilylene）-2- Ø -benzylarabinothiofuranosides及其亚砜作为糖基供体的β阿拉伯呋喃糖苷的合成：激活方法的重要性

  摘要：

  A 2- ø -苄基-3,5- ø -亚苄基- α- d -thioarabinofuranoside通过在碱性条件下α，α-二溴甲苯相应二醇的反应来获得。在-55°C下用1-苯亚磺酰基哌啶或二苯亚砜和三氟甲磺酸酐在二氯甲烷中活化后，与糖基受体的反应可提供极少或没有选择性的异头混合物。在1-苯亚磺酰基哌啶或二苯基亚砜条件下，类似的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α- d-硫代阿拉伯呋喃糖苷也没有显示出明显的选择性。与N-碘代琥珀酰亚胺和三氟甲磺酸银表明，甲硅烷基乙缩醛具有中等至高的β-选择性，而与起始硫代糖苷的构型无关。用三氟甲磺酸酐活化后的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α-阿拉伯呋喃糖基亚砜供体也获得了高β-选择性。N获得的高β选择性-碘代琥珀酰亚胺/三氟甲磺酸银和亚砜的方法与常见的中间体一致，最有可能是氧杂碳鎓离子。用1-苯亚磺酰基

  DOI：

  10.1021/jo061440x

文献信息

• Synthesis of the Docosanasaccharide Arabinan Domain of Mycobacterial Arabinogalactan and a Proposed Octadecasaccharide Biosynthetic Precursor
  作者：Maju Joe、Yu Bai、Ruel C. Nacario、Todd L. Lowary

  DOI：10.1021/ja072892+

  日期：2007.8.1

  Two major components of the cell wall in mycobacteria, including Mycobacterium tuberculosis, the causative agent of tuberculosis (TB), are polysaccharides containing arabinofuranose residues. In one of these polysaccharides, arabinogalactan, this arabinan domain consists of three identical motifs of 22 arabinofuranose residues, which are in turn attached to an underlying galactofuranan backbone. Recent studies have proposed that this docosanasaccharide motif, and a structurally related arabinan present in another cell wall polysaccharide, lipoarabinomannan, are biosynthesized from a common octadecasaccharide precursor. To facilitate the testing of this hypothesis, we report here the first total syntheses of these 18- and 22-residue oligosaccharides both functionalized with an aminooctyl linker arm. The route to the target compounds involved the preparation of four tri- to heptasaccharide building blocks possessing only benzoyl protecting groups that were coupled in a highly convergent manner via glycosyl trichloroacetimidate donors. Each of the targets could be prepared in only six steps from these intermediates, and in both cases more than 10 mg of material was obtained. These compounds are expected to be useful tools in probing the biosynthesis of these arabinan-containing polysaccharides. Such studies are essential prerequisites for the identification of novel anti-TB agents that target arabinan assembly.
• Ligand Specificity of CS-35, a Monoclonal Antibody That Recognizes Mycobacterial Lipoarabinomannan:  A Model System for Oligofuranoside−Protein Recognition
  作者：Christoph Rademacher、Glen K. Shoemaker、Hyo-Sun Kim、Ruixiang Blake Zheng、Hashem Taha、Chunjuan Liu、Ruel C. Nacario、David C. Schriemer、John S. Klassen、Thomas Peters、Todd L. Lowary

  DOI：10.1021/ja0723380

  日期：2007.8.1

  The CS-35 antibody is widely used in the characterization of glycans containing D-arabinofuranose residues, in particular polysaccharides present in the mycobacterial cell wall. A detailed understanding of the combining site of this antibody and the measurement of its binding to different ligands is of interest as this knowledge will have implications in the characterization of arabinofuranose-containing glycoconjugates that are increasingly recognized as important biological molecules. Of even greater significance is that an in-depth study of this carbohydrate-protein interaction will provide insights into the mechanisms by which oligosaccharides containing furanose rings are bound by proteins, an area that has, to date, received little attention. This system has been refractory to X-ray crystallography, and thus we report here a study of the interaction of CS-35 with its ligands using a combination of chemical synthesis, mass spectrometry, titration microcalorimetry, and NMR spectroscopy. Through these investigations we have established that the binding pocket recognizes, as a minimum epitope, a linear tetrasaccharide motif and that the residues at the reducing and non-reducing end of the oligosaccharide are essential for tight binding. The residue at the non-reducing end appears to be bound in an aliphatic pocket, whereas the rest of the tetrasaccharide interacts more strongly with aromatic amino acids.
• On the Use of 3,5-<i>O</i>-Benzylidene and 3,5-<i>O</i>-(Di-<i>tert</i>-butylsilylene)-2-<i>O</i>-benzylarabinothiofuranosides and Their Sulfoxides as Glycosyl Donors for the Synthesis of β-Arabinofuranosides:  Importance of the Activation Method
  作者：David Crich、Christian Marcus Pedersen、Albert A. Bowers、Donald J. Wink

  DOI：10.1021/jo061440x

  日期：2007.3.1

  1-benzenesulfinyl piperidine, or diphenyl sulfoxide, and trifluoromethanesulfonic anhydride in dichloromethane at −55 °C, reaction with glycosyl acceptors affords anomeric mixtures with little or no selectivity. The analogous 2-O-benzyl-3,5-O-(di-tert-butylsilylene)-α-d-thioarabinofuranoside also showed no significant selectivity under the 1-benzenesulfinyl piperidine or diphenyl sulfoxide conditions. With N-iodosuccinimide

  A 2- ø -苄基-3,5- ø -亚苄基- α- d -thioarabinofuranoside通过在碱性条件下α，α-二溴甲苯相应二醇的反应来获得。在-55°C下用1-苯亚磺酰基哌啶或二苯亚砜和三氟甲磺酸酐在二氯甲烷中活化后，与糖基受体的反应可提供极少或没有选择性的异头混合物。在1-苯亚磺酰基哌啶或二苯基亚砜条件下，类似的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α- d-硫代阿拉伯呋喃糖苷也没有显示出明显的选择性。与N-碘代琥珀酰亚胺和三氟甲磺酸银表明，甲硅烷基乙缩醛具有中等至高的β-选择性，而与起始硫代糖苷的构型无关。用三氟甲磺酸酐活化后的2 - O-苄基-3,5 - O-（二叔丁基亚甲硅烷基）-α-阿拉伯呋喃糖基亚砜供体也获得了高β-选择性。N获得的高β选择性-碘代琥珀酰亚胺/三氟甲磺酸银和亚砜的方法与常见的中间体一致，最有可能是氧杂碳鎓离子。用1-苯亚磺酰基