2,3,5,6-tetra-O-tert-butyldimethylsilyl-β-D-galactofuranosyl-(1->5)-2,6-di-O-benzoyl-D-galactono-1,4-lactone | 1130007-97-4

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,5,6-tetra-O-tert-butyldimethylsilyl-β-D-galactofuranosyl-(1->5)-2,6-di-O-benzoyl-D-galactono-1,4-lactone
• 英文别名: [(2R)-2-[(2R,3S,4R)-4-benzoyloxy-3-hydroxy-5-oxooxolan-2-yl]-2-[(2R,3R,4S,5S)-5-[(1R)-1,2-bis[[tert-butyl(dimethyl)silyl]oxy]ethyl]-3,4-bis[[tert-butyl(dimethyl)silyl]oxy]oxolan-2-yl]oxyethyl] benzoate
• CAS: 1130007-97-4
• 化学式: C₅₀H₈₄O₁₃Si₄
• 分子量: 1005.55
• InChiKey: COCJOLZJUYJPKA-SZAFMLJDSA-N

物化性质

• 沸点：
  808.2±65.0 °C(predicted)
• 密度：
  1.09±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  10.66
• 重原子数：
  67
• 可旋转键数：
  24
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  155
• 氢给体数：
  1
• 氢受体数：
  13

反应信息

• 作为产物：
  描述：

  per-O-TBS-D-Galf 、 2,6-tri-O-benzoyl-D-galactono-1,4-lactone 在 碘代三甲硅烷 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 、 乙腈 为溶剂， 生成 2,3,5,6-tetra-O-tert-butyldimethylsilyl-β-D-galactofuranosyl-(1->3)-2,6-di-O-benzoyl-D-galactono-1,4-lactone 、 2,3,5,6-tetra-O-tert-butyldimethylsilyl-β-D-galactofuranosyl-(1->5)-2,6-di-O-benzoyl-D-galactono-1,4-lactone
  参考文献：
  名称：

  Facile Synthesis of per-O-tert-Butyldimethylsilyl-β-d-galactofuranose and Efficient Glycosylation via the Galactofuranosyl Iodide

  摘要：

  The synthesis of crystalline per-O-TBS-beta-D-galactofuranose (4 beta) as a new precursor of D-Galf units is described. Anomeric iodination by reaction with TMSI followed by in situ coupling with simple alcohols and a wide variety of glycosyl acceptors, in the absence of a promoter, was employed as a new efficient glycosylation method for the assembly Of D-galactofuranosyl moieties with high beta-stereoselectivity. Under the mild conditions of this reaction labile protective groups, like acetals, and furanosyl linkages are preserved.

  DOI：

  10.1021/jo8025274