methyl 2-amino-3-O-benzyl-4,6-O-benzylidene-2-deoxy-α-D-altropyranoside | 280569-43-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 2-amino-3-O-benzyl-4,6-O-benzylidene-2-deoxy-α-D-altropyranoside
• CAS: 280569-43-9
• 化学式: C₂₁H₂₅NO₅
• 分子量: 371.433
• InChiKey: DXNRMWAKWKDFNR-WMDQAZIPSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.38
• 重原子数：
  27.0
• 可旋转键数：
  5.0
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.43
• 拓扑面积：
  72.17
• 氢给体数：
  1.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  methyl 2-amino-3-O-benzyl-4,6-O-benzylidene-2-deoxy-α-D-altropyranoside 在 N,N-二异丙基乙胺 、 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 4.5h， 生成 methyl 3-O-benzyl-2-deoxy-2-tetrachlorophthalimido-α-D-altropyranoside
  参考文献：
  名称：

  Synthetic Studies Towards theO-Specific Polysaccharide ofShigella Sonnei

  摘要：

  Synthetic routes are described to zwitter-ionic disaccharides that are diastereoisomerically related to frame-shifted repeating units of the title polysaccharide that contains 2-acetamido-4-amino-2,4,6-trideoxy-D-galactose and 2-acetamido-2-deoxy-L-altruronic acid. The intermediates corresponding to the trideoxygalactose residue feature acylamino functions at C-2 and an azido group at C-4. Best results were obtained with N-phthaloyl- and N-trichloroacetyl-protected derivatives. The intermediates corresponding to the uronic acid residue were either a D-altruronic acid-derived acceptor or a D-altrose-derived donor in which C-6 was oxidized after disaccharide formation.

  DOI：

  10.1080/07328300008544079
• 作为产物：
  描述：

  (2R,4aR,6S,7S,8S,8aS)-7-azido-6-methoxy-2-phenyl-8-phenylmethoxy-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxine 在 lithium aluminium tetrahydride 作用下， 以 四氢呋喃 为溶剂， 反应 1.5h， 以98%的产率得到methyl 2-amino-3-O-benzyl-4,6-O-benzylidene-2-deoxy-α-D-altropyranoside
  参考文献：
  名称：

  Synthetic Studies Towards theO-Specific Polysaccharide ofShigella Sonnei

  摘要：

  Synthetic routes are described to zwitter-ionic disaccharides that are diastereoisomerically related to frame-shifted repeating units of the title polysaccharide that contains 2-acetamido-4-amino-2,4,6-trideoxy-D-galactose and 2-acetamido-2-deoxy-L-altruronic acid. The intermediates corresponding to the trideoxygalactose residue feature acylamino functions at C-2 and an azido group at C-4. Best results were obtained with N-phthaloyl- and N-trichloroacetyl-protected derivatives. The intermediates corresponding to the uronic acid residue were either a D-altruronic acid-derived acceptor or a D-altrose-derived donor in which C-6 was oxidized after disaccharide formation.

  DOI：

  10.1080/07328300008544079