p-methylphenyl 2,4,6-tri-O-benzoyl-1-thio-β-galactopyranoside | 220645-18-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: p-methylphenyl 2,4,6-tri-O-benzoyl-1-thio-β-galactopyranoside
• 英文别名: [(2R,3R,4S,5R,6S)-3,5-dibenzoyloxy-4-hydroxy-6-(4-methylphenyl)sulfanyloxan-2-yl]methyl benzoate
• CAS: 220645-18-1
• 化学式: C₃₄H₃₀O₈S
• 分子量: 598.673
• InChiKey: JXKUWNYZWUFKNG-BBQPZQQSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  6.8
• 重原子数：
  43
• 可旋转键数：
  12
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.21
• 拓扑面积：
  134
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  p-methylphenyl 2,4,6-tri-O-benzoyl-1-thio-β-galactopyranoside 在 N-碘代丁二酰亚胺 、 三氟甲磺酸 、 MS-AW-300 作用下， 以 乙醚 、 二氯甲烷 为溶剂， 反应 2.75h， 生成 methyl 2,3-di-O-acetyl-6-O-benzyl-4-O-<2,4,6-tri-O-benzoyl-3-O-(2,3,4,6-tetra-O-benzyl-α-D-galactopyranosyl)-β-D-galactopyranosyl>-α-D-glucopyranoside
  参考文献：
  名称：

  Programmable One-Pot Oligosaccharide Synthesis

  摘要：

  In an effort to develop a broadly applicable approach to the facile one-pot synthesis of oligosaccharides, the reactivity of a number of p-methylphenyl thioglycoside (STol) donors which are either fully protected or have one hydroxyl group exposed has been quantitatively determined by HPLC. We have characterized and quantified the influence on reactivity of the structural effects of different monosaccharide cores and different protecting groups on each glycoside donor. In addition, we have established a correlation between glycosyl donor reactivity and the chemical shift of the anomeric proton by H-1 NMR. Using the reactivity data, we have created a database of thioglycosides as glycosyl donors and demonstrated its utility in the easy and rapid one-pot assembly of various linear and branched oligosaccharide structures. In addition, we have developed the first computer program, OptiMer, for use as a database search tool and guide for the selection of building blocks for the one-pot assembly of a desired oligosaccharide or a library of individual oligosaccharides.

  DOI：

  10.1021/ja982232s
• 作为产物：
  描述：

  p-methylphenyl 2,3,4-tri-O-benzoyl-1-thio-β-galactopyranoside 在 水 、 silver fluoride 作用下， 以 吡啶 为溶剂， 反应 0.33h， 以32%的产率得到p-methylphenyl 2,4,6-tri-O-benzoyl-1-thio-β-galactopyranoside
  参考文献：
  名称：

  Programmable One-Pot Oligosaccharide Synthesis

  摘要：

  In an effort to develop a broadly applicable approach to the facile one-pot synthesis of oligosaccharides, the reactivity of a number of p-methylphenyl thioglycoside (STol) donors which are either fully protected or have one hydroxyl group exposed has been quantitatively determined by HPLC. We have characterized and quantified the influence on reactivity of the structural effects of different monosaccharide cores and different protecting groups on each glycoside donor. In addition, we have established a correlation between glycosyl donor reactivity and the chemical shift of the anomeric proton by H-1 NMR. Using the reactivity data, we have created a database of thioglycosides as glycosyl donors and demonstrated its utility in the easy and rapid one-pot assembly of various linear and branched oligosaccharide structures. In addition, we have developed the first computer program, OptiMer, for use as a database search tool and guide for the selection of building blocks for the one-pot assembly of a desired oligosaccharide or a library of individual oligosaccharides.

  DOI：

  10.1021/ja982232s

文献信息

• TsOH-catalyzed acyl migration reaction of the Bz-group: innovative assembly of various building blocks for the synthesis of saccharides
  作者：Xing-Yong Liang、An-Lin Liu、Hua-Jun Shawn Fan、Lei Wang、Zhi-Ning Xu、Xin-Gang Ding、Bo-Shun Huang

  DOI：10.1039/d2ob02052a

  日期：——

  We developed an efficient method to achieve the regioselective acyl migration of benzoyl ester. In all the cases, the reactions required only the commercially available organic acid catalyst TsOH·H2O. This method enables the benzoyl group to migrate from secondary groups to primary hydroxyl groups, or from equatorial secondary hydroxyl groups to axial hydroxyl groups. The 1,2 or 1,3 acyl migration

  我们开发了一种有效的方法来实现苯甲酰酯的区域选择性酰基迁移。在所有情况下，反应只需要市售的有机酸催化剂 TsOH·H 2 O。该方法使苯甲酰基从仲羟基迁移到伯羟基，或从赤道仲羟基迁移到轴向羟基。1,2 或 1,3 酰基迁移可能通过五元和六元环邻位发生酸中间体。合成了范围广泛的正交保护单糖，它们是合成天然低聚糖的有用中间体。最后，为了证明该方法的实用性，组装了来自分枝杆菌细胞壁多糖的四糖部分。
• US6538117B1
  申请人：——

  公开号：US6538117B1

  公开（公告）日：2003-03-25
• Programmable One-Pot Oligosaccharide Synthesis
  作者：Zhiyuan Zhang、Ian R. Ollmann、Xin-Shan Ye、Ralf Wischnat、Timor Baasov、Chi-Huey Wong

  DOI：10.1021/ja982232s

  日期：1999.2.1

  In an effort to develop a broadly applicable approach to the facile one-pot synthesis of oligosaccharides, the reactivity of a number of p-methylphenyl thioglycoside (STol) donors which are either fully protected or have one hydroxyl group exposed has been quantitatively determined by HPLC. We have characterized and quantified the influence on reactivity of the structural effects of different monosaccharide cores and different protecting groups on each glycoside donor. In addition, we have established a correlation between glycosyl donor reactivity and the chemical shift of the anomeric proton by H-1 NMR. Using the reactivity data, we have created a database of thioglycosides as glycosyl donors and demonstrated its utility in the easy and rapid one-pot assembly of various linear and branched oligosaccharide structures. In addition, we have developed the first computer program, OptiMer, for use as a database search tool and guide for the selection of building blocks for the one-pot assembly of a desired oligosaccharide or a library of individual oligosaccharides.