N-benzyl-2-amino-6-O-benzyl-2,3-N,O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide | 910805-67-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: N-benzyl-2-amino-6-O-benzyl-2,3-N,O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide
• 英文别名: N-benzyl-6-O-benzyl-2,3-N,O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide；6-O-benzyl-2-benzylamino-2-N,3-O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide；[(3aR,4R,6R,7S,7aR)-3-benzyl-4-bromo-2-oxo-6-(phenylmethoxymethyl)-4,6,7,7a-tetrahydro-3aH-pyrano[3,4-d][1,3]oxazol-7-yl] 2-chloroacetate
• CAS: 910805-67-3
• 化学式: C₂₃H₂₃BrClNO₆
• 分子量: 524.796
• InChiKey: KZYGQNDJNYOWCY-FYKMYLNBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  32
• 可旋转键数：
  9
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.39
• 拓扑面积：
  74.3
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  N-benzyl-2-amino-6-O-benzyl-2,3-N,O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide 在 六氢-1-(苯基硫代)-2H-氮杂卓-2-酮 、 2,6-二叔丁基-4-甲基吡啶 、 ammonium cerium(IV) nitrate 、 三氟甲磺酸酐 、 4 A molecular sieve 、 silver trifluoromethanesulfonate 作用下， 以 1,4-二氧六环 、 二氯甲烷 、 水 、 甲苯 、 乙腈 为溶剂， 反应 25.08h， 生成 [(3aR,4R,6R,7S,7aR)-3-benzyl-4-[(2R,3S,4S,5R,6S)-4,5-diacetyloxy-6-[(2R,3S,4R,5R,6R)-5-(1,3-dioxoisoindol-2-yl)-6-hydroxy-4-phenylmethoxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-2-(phenylmethoxymethyl)oxan-3-yl]oxy-2-oxo-6-(phenylmethoxymethyl)-4,6,7,7a-tetrahydro-3aH-pyrano[3,4-d][1,3]oxazol-7-yl] 2-chloroacetate
  参考文献：
  名称：

  Synthesis of a Natural Oligosaccharide Antibiotic Active against Helicobacter pylori

  摘要：

  An oligosaccharide active against Helicobacter pylori was synthesized in a highly efficient manner for the first time. The anti-H. pylori oligosaccharide structure is a core-2 branched-type oligosaccharide with a characteristic alpha-N-acetylglucosamine at the nonreducing end. The oligosaccharide was synthesized from the nonreducing end to the reducing end, with an N-benzyl-2,3-oxazolidinone-carrying glycosyl donor used to introduce an alpha-N-acetylglucosamine at the nonreducing end. Complete chemoselective activation of a bromo sugar in the presence of a thioglycoside acceptor was achieved, and the use of 2,6-dimethylphenyl thioglycoside prevented the aglycon transfer observed when the corresponding phenyl thioglycoside is used as an acceptor.

  DOI：

  10.1021/jo070669p
• 作为产物：
  描述：

  phenyl N-benzyl-2-amino-6-O-benzyl-2,3-N,O-carbonyl-2-deoxy-1-thio-β-D-glucopyranoside 在 吡啶 、 溴 作用下， 以 二氯甲烷 为溶剂， 反应 1.0h， 生成 N-benzyl-2-amino-6-O-benzyl-2,3-N,O-carbonyl-4-O-chloroacetyl-2-deoxy-α-D-glucopyranosyl bromide
  参考文献：
  名称：

  N-Benzyl-2,3-oxazolidinone 作为糖基供体用于选择性 α-糖基化和涉及 1,2-顺式-糖基化的一锅寡糖合成

  摘要：

  使用 N-苄基-2,3-反式恶唑烷酮作为糖基供体的糖基化反应显示出高度的 α 选择性。供体的优点包括在克级制备中容易制备和简单的脱保护程序。随后，使用新型糖基供体证明了涉及 1,2-顺式糖苷键的一锅寡糖合成。

  DOI：

  10.1021/ja062531e

文献信息

• <i>N</i>-Benzyl-2,3-oxazolidinone as a Glycosyl Donor for Selective α-Glycosylation and One-Pot Oligosaccharide Synthesis Involving 1,2-<i>cis</i>-Glycosylation
  作者：Shino Manabe、Kazuyuki Ishii、Yukishige Ito

  DOI：10.1021/ja062531e

  日期：2006.8.1

  using N-benzyl-2,3-trans-oxazolidinones as the glycosyl donors were shown to be highly alpha-selective. Advantages of the donor include facile preparation in gram-scale preparation and simple deprotection procedures. Subsequently, a one-pot oligosaccharide synthesis involving 1,2-cis glycosidic linkages was demonstrated using the novel glycosyl donors.

  使用 N-苄基-2,3-反式恶唑烷酮作为糖基供体的糖基化反应显示出高度的 α 选择性。供体的优点包括在克级制备中容易制备和简单的脱保护程序。随后，使用新型糖基供体证明了涉及 1,2-顺式糖苷键的一锅寡糖合成。
• N-Benzyl-2,3-trans-Carbamate-Bearing Glycosyl Donors for 1,2-cis-Selective Glycosylation Reactions
  作者：Shino Manabe、Kazuyuki Ishii、Yukishige Ito

  DOI：10.1002/ejoc.201001278

  日期：2011.1

  Glycosyl donors for the preparation of 1,2-cis glycosides of amino sugars have been developed. The 2,3-trans-cyclic-carbamate-carrying glycosyl donors were readily prepared from the corresponding known trichloroethyl carbamate protected amino sugars under standard hydroxy group benzylation conditions. The donors exhibit high 1,2-cis stereoselectivity towards secondary hydroxy group substrates. In the

  已经开发了用于制备氨基糖的 1,2-顺式糖苷的糖基供体。在标准的羟基苄基化条件下，由相应的已知氨基甲酸三氯乙酯保护的氨基糖很容易制备携带 2,3-反式-环-氨基甲酸酯的糖基供体。供体对仲羟基底物表现出高 1,2-顺式立体选择性。在伯羟基受体的情况下，借助二恶烷效应实现了高立体选择性。糖基化后，在碱性条件下去除氨基甲酸酯。重要的是，这些糖基供体可用于聚合物支持的固相合成。
• Synthesis of a Natural Oligosaccharide Antibiotic Active against <i>Helicobacter pylori</i>
  作者：Shino Manabe、Kazuyuki Ishii、Yukishige Ito

  DOI：10.1021/jo070669p

  日期：2007.8.1

  An oligosaccharide active against Helicobacter pylori was synthesized in a highly efficient manner for the first time. The anti-H. pylori oligosaccharide structure is a core-2 branched-type oligosaccharide with a characteristic alpha-N-acetylglucosamine at the nonreducing end. The oligosaccharide was synthesized from the nonreducing end to the reducing end, with an N-benzyl-2,3-oxazolidinone-carrying glycosyl donor used to introduce an alpha-N-acetylglucosamine at the nonreducing end. Complete chemoselective activation of a bromo sugar in the presence of a thioglycoside acceptor was achieved, and the use of 2,6-dimethylphenyl thioglycoside prevented the aglycon transfer observed when the corresponding phenyl thioglycoside is used as an acceptor.