2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->6)-]-2,4-di-O-benzoyl-α-D-mannopyranosyl trichloroacetimidate | 904690-08-0

• 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-acetyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->6)-]-2,4-di-O-benzoyl-α-D-mannopyranosyl trichloroacetimidate
• 英文别名: 2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl]-(1->6)-2,4-di-O-benzoyl-α-D-mannopyranosyl trichloroacetamidate；Man2Ac3Ac4Ac6Ac(a1-3)[Man2Ac3Ac4Ac6Ac(a1-6)][Bz(-2)][Bz(-4)]Man(a)-O-C(NH)CCl3；[(2R,3R,4S,5S,6R)-5-benzoyloxy-4-[(2S,3S,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxy-2-[[(2S,3S,4S,5R,6R)-3,4,5-triacetyloxy-6-(acetyloxymethyl)oxan-2-yl]oxymethyl]-6-(2,2,2-trichloroethanimidoyl)oxyoxan-3-yl] benzoate
• CAS: 904690-08-0
• 化学式: C₅₀H₅₆Cl₃NO₂₆
• 分子量: 1193.34
• InChiKey: IEOLVQFMRNPKIF-CMPWHSNNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.1
• 重原子数：
  80
• 可旋转键数：
  31
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.54
• 拓扑面积：
  342
• 氢给体数：
  1
• 氢受体数：
  27

反应信息

• 作为反应物：
  描述：

  2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->6)-]-2,4-di-O-benzoyl-α-D-mannopyranosyl trichloroacetimidate 在 三氟甲磺酸三甲基硅酯 、 10% palladium on activated charcoal 、 氢气 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 为溶剂， 反应 1.83h， 生成 (2R,3R,4S,5S,6S)-2-(acetoxymethyl)-6-(((2R,3R,4S,5S,6S)-6-(3-aminopropoxy)-3,5-bis(benzoyloxy)-4-(((2R,3S,4S,5R,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydro-2H-pyran-2-yl)oxy)tetrahydro-2H-pyran-2-yl)methoxy)tetrahydro-2H-pyran-3,4,5-triyl triacetate
  参考文献：
  名称：

  Identification of trimannoside-recognizing peptide sequences from a T7 phage display screen using a QCM device

  摘要：

  Here, we report on the identification of trimannoside-recognizing peptide sequences from a T7 phage display screen using a quartz-crystal microbalance (QCM) device. A trimannoside derivative that can form a self-assembled monolayer (SAM) was synthesized and used for immobilization on the gold electrode surface of a QCM sensor chip. After six sets of one-cycle affinity selection, T7 phage particles displaying PSVGLFTH (8-mer) and SVGLGLGFSTVNCF (14-mer) were found to be enriched at a rate of 17/44, 9/44, respectively, suggesting that these peptides specifically recognize trimannoside. Binding checks using the respective single T7 phage and synthetic peptide also confirmed the specific binding of these sequences to the trimannoside-SAM. Subsequent analysis revealed that these sequences correspond to part of the primary amino acid sequence found in many mannose- or hexose- related proteins. Taken together, these results demonstrate the effectiveness of our T7 phage display environment for affinity selection of binding peptides. We anticipate this screening result will also be extremely useful in the development of inhibitors or drug delivery systems targeting polysaccharides as well as further investigations into the function of carbohydrates in vivo. (c) 2008 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.bmc.2008.11.004
• 作为产物：
  描述：

  benzyl 2,4-di-O-benzoyl-α-D-mannopyranoside 在 palladium on activated charcoal 4 A molecular sieve 、 三氟化硼乙醚 、 氢气 、 1,8-二氮杂双环[5.4.0]十一碳-7-烯 作用下， 以 二氯甲烷 、 乙酸乙酯 为溶剂， 反应 43.5h， 生成 2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->3)-[2,3,4,6-tetra-O-acetyl-α-D-mannopyranosyl-(1->6)-]-2,4-di-O-benzoyl-α-D-mannopyranosyl trichloroacetimidate
  参考文献：
  名称：

  N-聚糖恶唑啉的合成：内己糖胺酶的供体催化糖基化。

  摘要：

  恶唑啉单，二，三和六糖，对应于N-连接的糖蛋白高甘露糖聚糖的核心成分，被合成为潜在的糖基供体，用于内己糖胺酶催化糖肽的糖基化和糖蛋白重塑。关键的β-D-Manp-（1-> 4）-D-GlcpNAc连接是通过顺序三氟甲磺酸酯化和亲核取代作用通过葡萄糖二糖底物的差向异构化合成的。恶唑啉直接由端基OPMP保护的N-乙酰基氨基葡萄糖衍生物形成。用三糖恶唑啉供体证明了合成的β-D-GlcpNAcAsn糖基氨基酸的高效内己糖胺酶催化糖基化。

  DOI：

  10.1016/j.carres.2006.03.007

文献信息

• Endohexosaminidase-Catalysed Glycosylation with Oxazoline Donors: Fine Tuning of Catalytic Efficiency and Reversibility
  作者：Thomas W. D. F. Rising、Christoph D. Heidecke、James W. B. Moir、Zhenlian Ling、Antony J. Fairbanks

  DOI：10.1002/chem.200800365

  日期：2008.7.18

  A complete series of oxazoline di-, tri-, tetra-, and hexasaccharides, corresponding to the core sections of N-linked glycoprotein high mannose glycans, together with the corresponding oligosaccharides containing a central glucose unit, were synthesised and tested as glycosyl donors for glycosylation of a GlcNAcAsn glycosyl amino acid catalysed by the endohexosaminidases M (Endo M), A (Endo A) and

  合成了一系列完整的恶唑啉二糖、三糖、四糖和六糖，对应于 N-连接糖蛋白高甘露糖聚糖的核心部分，以及相应的含有中心葡萄糖单元的寡糖，并作为糖基供体进行了测试。由内己糖胺酶 M (Endo M)、A (Endo A) 和 H (Endo H) 催化的 GlcNAcAsn 糖基氨基酸的糖基化。虽然 Endo H 没有催化任何糖基化反应，但 Endo M 和 Endo A 都有效地催化了糖基化，这些糖基化不仅限于包含 Manbeta(1-->4)GlcNAc 链接的供体。精确的结构活性关系和时间进程研究揭示了与所用酶和精确恶唑啉结构相关的合成过程效率的微调。Endo M 和 Endo A 均可实现有效的不可逆糖基化，进一步证明使用结构修饰的恶唑啉供体作为过渡态模拟物以促进酶催化合成，同时防止产物水解；在这些情况下，酶表现出“糖基连接酶”活性。