p-methoxyphenyl 2,3,4-tri-O-benzyl-6-O-triethyl-silyl-β-D-galactopyranoside | 1206803-32-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: p-methoxyphenyl 2,3,4-tri-O-benzyl-6-O-triethyl-silyl-β-D-galactopyranoside
• CAS: 1206803-32-8
• 化学式: C₄₀H₅₀O₇Si
• 分子量: 670.918
• InChiKey: ZHLRMRHEHWDPGM-IERCXCISSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.58
• 重原子数：
  48.0
• 可旋转键数：
  18.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  64.61
• 氢给体数：
  0.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  p-methoxyphenyl 2,3,4-tri-O-benzyl-6-O-triethyl-silyl-β-D-galactopyranoside 在 四丁基氟化铵 、 水 作用下， 以 四氢呋喃 为溶剂， 反应 1.0h， 生成 4-methoxyphenyl 2,3,4-tri-O-benzyl-β-D-galactopyranoside
  参考文献：
  名称：

  Highly Efficient and Mild Method for Regioselective De-O-benzylation of Saccharides by Co₂(CO)₈-Et₃SiH−CO Reagent System

  摘要：

  A highly efficient and mild method for the de-O-benzylation of protected saccharides was developed by transforming terminal benzyl ethers into silyl ethers using Co-2(CO)(8)-Et3SiH under 1 atm of CO. The method was successfully used for the de-O-benzylation of perbenzylated monosaccharides with various anomeric protecting groups, as well as natural disaccharides and trisaccharides such as sucrose, raffinose, and melezitose in good yields (>80%).

  DOI：

  10.1021/ol902717y
• 作为产物：
  描述：

  三乙基硅烷 、 4-甲氧苯基-2,3,4,6-四-O-苄基-Β-D-吡喃半乳糖苷 在 dicobalt octacarbonyl 、 一氧化碳 作用下， 以 苯 为溶剂， 20.0~50.0 ℃ 、101.33 kPa 条件下， 反应 30.25h， 以85%的产率得到p-methoxyphenyl 2,3,4-tri-O-benzyl-6-O-triethyl-silyl-β-D-galactopyranoside
  参考文献：
  名称：

  Highly Efficient and Mild Method for Regioselective De-O-benzylation of Saccharides by Co₂(CO)₈-Et₃SiH−CO Reagent System

  摘要：

  A highly efficient and mild method for the de-O-benzylation of protected saccharides was developed by transforming terminal benzyl ethers into silyl ethers using Co-2(CO)(8)-Et3SiH under 1 atm of CO. The method was successfully used for the de-O-benzylation of perbenzylated monosaccharides with various anomeric protecting groups, as well as natural disaccharides and trisaccharides such as sucrose, raffinose, and melezitose in good yields (>80%).

  DOI：

  10.1021/ol902717y