3,4,6-tri-O-acetyl-1,2-O-<1-(R)-methoxyethylidene>-β-D-mannopyranose | 80877-03-8

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氧吡喃
• 英文名称: 3,4,6-tri-O-acetyl-1,2-O-<1-(R)-methoxyethylidene>-β-D-mannopyranose
• 英文别名: 3,4,5-tri-O-acetyl-1,2-O-(1-(endo-methoxy)ethylidene)-beta-D-mannopyranose；3,4,6-tri-O-acetyl-1,2-O-(1-R-methoxyethylidene)-β-D-mannopyranose；3,4,6-tri-O-acetyl-1,2-O-(1-methoxyethylidene)-β-D-mannopyranose；3,4,6-tri-O-acetyl-1,2-O-(methoxyethylidene)-β-D-mannopyranoside；1,2-O-(exo-1-methoxyethylidene)-3,4,6-tri-O-acetyl-β-D-mannopyranose；[(2R,3aS,5R,6R,7S,7aS)-6,7-diacetyloxy-2-methoxy-2-methyl-5,6,7,7a-tetrahydro-3aH-[1,3]dioxolo[4,5-b]pyran-5-yl]methyl acetate
• CAS: 80877-03-8
• 化学式: C₁₅H₂₂O₁₀
• 分子量: 362.334
• InChiKey: AUVGRVGPAIFPSA-SPJHXALWSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.3
• 重原子数：
  25
• 可旋转键数：
  8
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.8
• 拓扑面积：
  116
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  3,4,6-tri-O-acetyl-1,2-O-<1-(R)-methoxyethylidene>-β-D-mannopyranose 在 甲醇 、 四丁基碘化铵 、 sodium hydride 、 potassium carbonate 、 mercury dibromide 作用下， 以 N,N-二甲基甲酰胺 、 乙腈 为溶剂， 反应 44.0h， 生成 ethyl 2-O-acetyl-3,4,6-tri-O-benzyl-1-thio-α-D-mannopyranoside
  参考文献：
  名称：

  Mannosylated compounds useful for the prevention and the treatment of infectious diseases

  摘要：

  本发明涉及由（i）具有一到三个甘露糖、二甘露糖或三甘露糖基团的极性头部与（ii）至少含有17个碳原子长度的单脂肪链通过适当的连接剂耦合而成的新型抗感染化合物。同时提供了药物组合物及其治疗用途。

  公开号：

  EP2594575A1
• 作为产物：
  描述：

  Α-D-五乙酸甘露糖酯 在 2,6-二甲基吡啶 、 氢溴酸 、 溶剂黄146 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 8.0h， 生成 3,4,6-tri-O-acetyl-1,2-O-<1-(R)-methoxyethylidene>-β-D-mannopyranose
  参考文献：
  名称：

  ‘Naked’ and Hydrated Conformers of the Conserved Core Pentasaccharide of N-linked Glycoproteins and Its Building Blocks

  摘要：

  N-glycosylation of eukaryotic proteins is widespread and vital to survival. The pentasaccharide unit -Man(3)GlcNAc(2)- lies at the protein-junction core of all oligosaccharides attached to asparagine side chains during this process. Although its absolute conservation implies an indispensable role, associated perhaps with its structure, its unbiased conformation and the potential modulating role of solvation are unknown; both have now been explored through a combination of synthesis, laser spectroscopy, and computation. The proximal -GlcNAc-GlcNAc- unit acts as a rigid rod, while the central, and unusual, -Man-beta-1,4-GlcNAc- linkage is more flexible and is modulated by the distal Man-alpha-1,3- and Man-alpha-1,6- branching units. Solvation stiffens the 'rod' but leaves the distal residues flexible, through a beta-Man pivot, ensuring anchored projection from the protein shell while allowing flexible interaction of the distal portion of N-glycosylation with bulk water and biomolecular assemblies.

  DOI：

  10.1021/ja4056678

文献信息

• Preparation of Thiosugars and Their Use
  申请人：Davis Benjamin Guy

  公开号：US20090176970A1

  公开（公告）日：2009-07-09

  A process for the preparation of a thiosaccharide represented by Saccharide-S-H wherein Saccharide comprises at least 4 sugar units, comprises subjecting a corresponding compound of the formula (P)Saccharide-S-(P) wherein (P) represents an O- or S-protecting group(s), to Birch reduction.

  一种制备由糖硫代糖（Saccharide-S-H）表示的硫代糖的方法，其中糖代表至少4个糖单元，包括将具有以下结构的相应化合物（P）糖硫代糖（P）进行桦还原：（P）糖硫代糖（P），其中（P）代表一个或多个O-或S-保护基。
• Preparation of 8-methoxycarbonyloctyl glycosides of α-d-mannopyranose, 2-O-α-mannopyranosyl-α-d-mannopyranose, β-d-galactofuranose, and 3-O-β-d-galactofuranosyl-α-d-mannopyranose
  作者：David S. Tsui、Philip A.J. Gorin

  DOI：10.1016/s0008-6215(00)90094-6

  日期：1986.11

  with the general structure mono-(or di-)saccharide-lipid spacer-protein having possible antigenic and immunogenic activity in respect to infection with Trypanosoma cruzi. Tri-O-acetyl-1,2-O-(1-methoxyethylidene) derivatives of D-mannopyranose and D-galactofuranose were treated with alcohols in the presence and absence of mercuric bromide to give orthoesters which rearranged into glycosides.

  制备了α-D-甘露吡喃糖，2-O-α-甘露吡喃糖基-α-D-甘露吡喃糖，β-D-半乳糖呋喃糖和3-O-β-D-半乳糖呋喃糖基α-D-甘露吡喃糖的8-甲氧羰基辛基糖苷。作为合成具有一般结构的复合物的中间体，单（或二）糖-脂质间隔蛋白对克鲁斯锥虫的感染具有可能的抗原和免疫原活性。在存在和不存在溴化汞的情况下，用醇处理D-甘露吡喃糖和D-半乳糖呋喃糖的三-O-乙酰基-1,2-O-（1-甲氧基亚乙基）衍生物，得到原酸酯，其重新排列成糖苷。
• Reactions of sugar thio-orthoesters: Nucleophilic substitution of an arylthio group during zemplén deacylation
  作者：Leon V. Backinowsky、Narguiz E. Byramova、Yury E. Tsvetkov、Vitali I. Betaneli

  DOI：10.1016/s0008-6215(00)80813-7

  日期：1981.12

  benzoylated sugar 1,2-thio-orthoesters bearing an S -aromatic residue with methanolic sodium methoxide is accompanied by inter- and intra-molecular nucleophilic substitution of the arylthio group with formation of the corresponding bi- and tri-cyclic orthoesters. Stereochemical aspects and a possible mechanism for this reaction are discussed. Free arylthio-orthoesters were obtained by performing the deacylation

  摘要带有S-芳族残基的乙酰化和苯甲酰化糖1,2-硫代原酸酯与甲醇钠的甲醇脱酰反应伴随着芳硫基的分子间和分子内亲核取代，并形成了相应的双环和三环原酸酯。讨论了立体化学方面和该反应的可能机理。通过用甲醇甲醇钠在吡啶中进行脱酰基反应，获得游离的芳硫基原酸酯。
• Stereoselective Synthesis of Allyl-<i>C</i>-mannosyl Compounds:  Use of a Temporary Silicon Connection in Intramolecular Allylation Strategies with Allylsilanes
  作者：Julien Beignet、James Tiernan、Chang H. Woo、Benson M. Kariuki、Liam R. Cox

  DOI：10.1021/jo049061w

  日期：2004.9.1

  Methyl mannoside 16 containing an allyldimethylsilyl ether at C(2) was synthesized in nine steps from d-mannose. Reaction with TMSOTf in MeCN at room-temperature effected C-glycosylation to provide the α-allyl-C-mannosyl product 18 with excellent stereoselectivity. Crossover experiments over a range of reaction concentrations proved that reaction was proceeding via an intermolecular pathway rather

  在9个步骤中，由d-甘露糖合成了在C（2）处含有烯丙基二甲基甲硅烷基醚的甲基甘露糖苷16。与将TMSOTf反应在MeCN在室温进行Ç -glycosylation以提供α烯丙基Ç -mannosyl产品18具有优异的立体选择性。在一系列反应浓度范围内的交叉实验证明，反应是通过分子间途径进行的，而不是通过分子内传递途径进行的。在存在除酸剂2,6-DTBMP的情况下，这种烯丙基化反应具有极高的立体选择性，这可归因于烯丙基甲硅烷基醚16表现为烯丙基化剂。七元环过渡态的几何约束解释了分子内烯丙基转移的缺乏。将改性的烯丙基硅烷29a - c连接到甲基甘露糖苷15的C（2）OH上可以改善物质。系留甘露糖苷27a - c的反应在室温下，在MeCN中存在2,6-DTBMP的条件下，使用TMSOTf提供的产物范围取决于甲硅烷基醚系链上烷基取代基的大小。不论甲硅烷基醚系链上烷基取代基的大小如何，二烯产物都是主
• Synthesis of a tetrasaccharide fragment of cobra venom factor oligosaccharide
  作者：Zhong-Jun Li、Hui Li、Meng-Shen Cai

  DOI：10.1016/s0008-6215(99)00107-x

  日期：1999.7

  Synthesis of a tetrasaccharide fragment, alpha-L-Fuc-(1-->3)-beta-D-GlcNAc-(1-->2)-alpha-D-Man-(1-->6)-alpha-D-Man-OMe of the cobra venom factor (CVF) oligosaccharide is described. (C) 1999 Elsevier Science Ltd. All rights reserved.