2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose | 849355-84-6

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose
• 英文别名: (1R)-1-[(3aR,5S,6S,6aR)-2,2-dimethyl-6-phenylmethoxy-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxol-5-yl]-2-[(2S,3R,4S,5S,6R)-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxyethanol
• CAS: 849355-84-6
• 化学式: C₅₀H₅₆O₁₁
• 分子量: 832.988
• InChiKey: ZJUFRFZRXWUZHM-TZGFENAQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.4
• 重原子数：
  61
• 可旋转键数：
  20
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.4
• 拓扑面积：
  113
• 氢给体数：
  1
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose 、 乙酸酐 在 吡啶 作用下， 反应 2.0h， 以2.5 g的产率得到2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-5-O-acetyl-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose
  参考文献：
  名称：

  First synthesis of 5,6-branched galacto-hexasaccharide, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016

  摘要：

  alpha-D-Galactopyranosyl-(1 --> 6)-[beta-D-galactofuranosyl-(1 --> 5)]-beta-D-galactofuranosyl-(1 --> 6)-beta-D-galactofuranosyl-(1 --> 5)-[alpha-D -galactopyranosyl-(1 --> 6)]-beta-D-galactofuranose, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016, has been synthesized as its dodecyl glycoside 2 by coupling of 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranosyl trichloroacetimidate 14 with dodecyl 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranoside 16. The trisaccharide trichloroacetimidate donor 14 and trisaccharide acceptor 16 were regiospecifically prepared by employing 3-O-benzyl-1,2-O-isopropylidene-alpha-D-galactofuranose 4 as the glycosyl acceptor, and isopropyl 2,3,4,6-tetra-O-benzyl-1-thio-beta-D-galactopyranoside 5 and 6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl trichloroacetimidate 9 as glycosyl donors. (C) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2004.12.014
• 作为产物：
  描述：

  2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-5-O-acetyl-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose 在 氨 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 12.0h， 以92%的产率得到2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl-(1->6)-3-O-benzyl-1,2-O-isopropylidene-α-D-galactofuranose
  参考文献：
  名称：

  First synthesis of 5,6-branched galacto-hexasaccharide, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016

  摘要：

  alpha-D-Galactopyranosyl-(1 --> 6)-[beta-D-galactofuranosyl-(1 --> 5)]-beta-D-galactofuranosyl-(1 --> 6)-beta-D-galactofuranosyl-(1 --> 5)-[alpha-D -galactopyranosyl-(1 --> 6)]-beta-D-galactofuranose, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016, has been synthesized as its dodecyl glycoside 2 by coupling of 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranosyl trichloroacetimidate 14 with dodecyl 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranoside 16. The trisaccharide trichloroacetimidate donor 14 and trisaccharide acceptor 16 were regiospecifically prepared by employing 3-O-benzyl-1,2-O-isopropylidene-alpha-D-galactofuranose 4 as the glycosyl acceptor, and isopropyl 2,3,4,6-tetra-O-benzyl-1-thio-beta-D-galactopyranoside 5 and 6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl trichloroacetimidate 9 as glycosyl donors. (C) 2005 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetasy.2004.12.014

文献信息

• First synthesis of 5,6-branched galacto-hexasaccharide, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016
  作者：Guohua Zhang、Mingkun Fu、Jun Ning

  DOI：10.1016/j.tetasy.2004.12.014

  日期：2005.2

  alpha-D-Galactopyranosyl-(1 --> 6)-[beta-D-galactofuranosyl-(1 --> 5)]-beta-D-galactofuranosyl-(1 --> 6)-beta-D-galactofuranosyl-(1 --> 5)-[alpha-D -galactopyranosyl-(1 --> 6)]-beta-D-galactofuranose, the dimer of the trisaccharide repeating unit of the cell-wall galactans of Bifidobacterium catenulatum YIT 4016, has been synthesized as its dodecyl glycoside 2 by coupling of 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranosyl trichloroacetimidate 14 with dodecyl 2,3,4,6-tetra-O-benzyl-alpha-D-galactopyranosyl-(1 --> 6)-[2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl-(1 --> 5)]-2-O-acetyl-3-O-benzyl-beta-D-galactofuranoside 16. The trisaccharide trichloroacetimidate donor 14 and trisaccharide acceptor 16 were regiospecifically prepared by employing 3-O-benzyl-1,2-O-isopropylidene-alpha-D-galactofuranose 4 as the glycosyl acceptor, and isopropyl 2,3,4,6-tetra-O-benzyl-1-thio-beta-D-galactopyranoside 5 and 6-O-acetyl-2,3,5-tri-O-benzoyl-beta-D-galactofuranosyl trichloroacetimidate 9 as glycosyl donors. (C) 2005 Elsevier Ltd. All rights reserved.