4-methoxyphenyl (2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl)-(1->4)-(2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-β-D-galactopyranoside | 1340473-46-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methoxyphenyl (2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl)-(1->4)-(2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-β-D-galactopyranoside
• CAS: 1340473-46-2
• 化学式: C₇₈H₈₀O₂₀
• 分子量: 1337.48
• InChiKey: RUBHOZUIXHQIMS-JVWBMDFNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  11.41
• 重原子数：
  98.0
• 可旋转键数：
  29.0
• 环数：
  12.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  208.12
• 氢给体数：
  0.0
• 氢受体数：
  20.0

反应信息

• 作为反应物：
  描述：

  4-methoxyphenyl (2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl)-(1->4)-(2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-β-D-galactopyranoside 在 perchloric acid adsorbed on silica gel 作用下， 以 乙腈 为溶剂， 反应 0.33h， 以86%的产率得到4-methoxyphenyl (2,3-di-O-benzyl-α-D-galactopyranosyl)-(1->4)-(2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-β-D-galactopyranoside
  参考文献：
  名称：

  Convergent synthesis of the pentasaccharide repeating unit of the O-antigen of Shigella boydii type 14

  摘要：

  An efficient synthesis of the pentasaccharide repeating unit of the O-antigen of Shigella boydii type 14 is reported. A one-pot, two step iterative glycosylation and [3+2] block synthetic strategy have been adopted for the construction of the pentasaccharide derivative 11, which was then transformed into target compound 1 after a series of functional group transformations. The primary hydroxyl group has been selectively oxidized to a carboxylic acid functionality without affecting the secondary hydroxyl groups. HClO4-SiO2 has been used as a solid acid substitute in all glycosylation and functional group transformations. The yields were excellent in all glycosylation steps. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2011.08.004
• 作为产物：
  描述：

  ethyl (2,3-di-O-benzyl-4,6-O-benzylidene-D-galactopyranosyl)-(1->4)-2,3-di-O-acetyl-6-O-benzoyl-1-deoxy-1-thio-β-D-glucopyranoside 、 4-methoxyphenyl 2,3,4-tri-O-benzyl-β-D-galactopyranoside 在 N-碘代丁二酰亚胺 、 perchloric acid adsorbed on silica gel 作用下， 以 二氯甲烷 为溶剂， 反应 0.5h， 以2.3 g的产率得到4-methoxyphenyl (2,3-di-O-benzyl-4,6-O-benzylidene-α-D-galactopyranosyl)-(1->4)-(2,3-di-O-acetyl-6-O-benzoyl-β-D-glucopyranosyl)-(1->6)-2,3,4-tri-O-benzyl-β-D-galactopyranoside
  参考文献：
  名称：

  Convergent synthesis of the pentasaccharide repeating unit of the O-antigen of Shigella boydii type 14

  摘要：

  An efficient synthesis of the pentasaccharide repeating unit of the O-antigen of Shigella boydii type 14 is reported. A one-pot, two step iterative glycosylation and [3+2] block synthetic strategy have been adopted for the construction of the pentasaccharide derivative 11, which was then transformed into target compound 1 after a series of functional group transformations. The primary hydroxyl group has been selectively oxidized to a carboxylic acid functionality without affecting the secondary hydroxyl groups. HClO4-SiO2 has been used as a solid acid substitute in all glycosylation and functional group transformations. The yields were excellent in all glycosylation steps. (C) 2011 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2011.08.004