(2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester | 211678-07-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
• 英文别名: methyl (2S,3R,4S,5R,6R)-3-hydroxy-4,5-bis(phenylmethoxy)-6-(2-trimethylsilylethoxy)oxane-2-carboxylate
• CAS: 211678-07-8
• 化学式: C₂₆H₃₆O₇Si
• 分子量: 488.653
• InChiKey: PVBXHXZQEDUXKQ-IUSCBXDMSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.77
• 重原子数：
  34
• 可旋转键数：
  12
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.5
• 拓扑面积：
  83.4
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  (2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester 在 palladium on activated charcoal sodium hydroxide 、 N-碘代丁二酰亚胺 、 三氟甲磺酸 、 4 A molecular sieve 、 氢气 作用下， 以 乙醚 、 二氯甲烷 、 水 、 溶剂黄146 为溶剂， -65.0~25.0 ℃ 、101.33 kPa 条件下， 反应 20.0h， 生成 (2S,3R,4R,5R,6R)-4,5-Dihydroxy-3-((2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-hydroxymethyl-tetrahydro-pyran-2-yloxy)-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid
  参考文献：
  名称：

  Synthesis of some amino and carboxy analogs of galabiose; evaluation as inhibitors of the pilus protein PapGJ96 from Escherichia coli

  摘要：

  The 2'-amino-2'-deoxy, 6-amino-6-deoxy, and 6-carboxy analogs of the reference inhibitor 2-(trimethylsilyl)ethyl (alpha-D-galactopyranosyl)-(1-->4)-beta-D-galactopyranoside were synthesized and evaluated as inhibitors of the binding of the Escherichia coli-derived pilus protein PapG(J96), using an ELISA assay. The inhibitory efficiencies (K-rel; relative to the reference inhibitor) were: 157, 13, and < 8, respectively. The results support the previously proposed combining site model, where the protein carries a negatively charged amino acid residue near HO-2' and HO-6 of the galabioside. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(98)00020-2
• 作为产物：
  描述：

  2-(trimethylsilyl)ethyl 2,3-di-O-benzyl-β-D-galactopyranoside 在 sodium hypochlorite 、 2,2,6,6-四甲基哌啶氧化物 、 四丁基溴化铵 、 碳酸氢钠 、 sodium chloride 、 potassium bromide 作用下， 以 甲醇 、 正己烷 、 二氯甲烷 为溶剂， 反应 2.17h， 生成 (2S,3R,4S,5R,6R)-4,5-Bis-benzyloxy-3-hydroxy-6-(2-trimethylsilanyl-ethoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
  参考文献：
  名称：

  Synthesis of some amino and carboxy analogs of galabiose; evaluation as inhibitors of the pilus protein PapGJ96 from Escherichia coli

  摘要：

  The 2'-amino-2'-deoxy, 6-amino-6-deoxy, and 6-carboxy analogs of the reference inhibitor 2-(trimethylsilyl)ethyl (alpha-D-galactopyranosyl)-(1-->4)-beta-D-galactopyranoside were synthesized and evaluated as inhibitors of the binding of the Escherichia coli-derived pilus protein PapG(J96), using an ELISA assay. The inhibitory efficiencies (K-rel; relative to the reference inhibitor) were: 157, 13, and < 8, respectively. The results support the previously proposed combining site model, where the protein carries a negatively charged amino acid residue near HO-2' and HO-6 of the galabioside. (C) 1998 Elsevier Science Ltd. All rights reserved.

  DOI：

  10.1016/s0008-6215(98)00020-2

文献信息

• Synthesis of building blocks for an iterative approach towards oligomers of the <i>Streptococcus pneumoniae</i> type 1 zwitterionic capsular polysaccharide repeating unit
  作者：Aisling Ní Cheallaigh、Stefan Oscarson

  DOI：10.1139/cjc-2016-0006

  日期：2016.11

  extendable trisaccharide building blocks of the zwitterionic capsular polysaccharides of Spt1 is described. Key elements include the comparison of pre-glycosylation oxidation and post-glycosylation oxidation approaches using thioglycoside donors to the target trisaccharide, the optimisation of the post-glycosylation oxidation approach, and the conversion of the trisaccharide to building blocks tailored

  来自 1 型肺炎链球菌 (Spt1) 的两性离子荚膜多糖提取物，质量约为 8 kDa，已显示出独特的 T 细胞激活特性。Spt1荚膜多糖的三糖重复单元的低聚物[→3)-4-NH2-α-d-QuipNAc-(1→4)-α-d-GalpA-(1→3)-α-d-GalpA- (1-]n 需要定义长度来进一步研究这种反应。描述了一种实现 Spt1 的两性离子荚膜多糖的可迭代扩展的三糖构建块的方法。关键要素包括糖基化前氧化和糖基化后氧化方法的比较使用硫糖苷供体到目标三糖，优化后糖基化氧化方法，以及将三糖转化为为迭代糖基化量身定制的构建块。