allyl 3,4,6-tri-O-benzoyl-α-D-mannopyranoside | 578007-57-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: allyl 3,4,6-tri-O-benzoyl-α-D-mannopyranoside
• 英文别名: [(2R,3R,4R,5S,6S)-3,4-dibenzoyloxy-5-hydroxy-6-prop-2-enoxyoxan-2-yl]methyl benzoate
• CAS: 578007-57-5
• 化学式: C₃₀H₂₈O₉
• 分子量: 532.547
• InChiKey: ZSWCGNLTNCEMHN-URAJONJJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  4.7
• 重原子数：
  39
• 可旋转键数：
  13
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.23
• 拓扑面积：
  118
• 氢给体数：
  1
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  allyl 3,4,6-tri-O-benzoyl-α-D-mannopyranoside 在 三氟甲磺酸三甲基硅酯 乙酰氯 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 反应 14.0h， 生成 allyl (3,4,6-tri-O-benzoyl-α-D-mannopyranosyl)-(1->2)-3,4,6-tri-O-benzoyl-α-D-mannopyranoside
  参考文献：
  名称：

  Novel template-assembled oligosaccharide clusters as epitope mimics for HIV-neutralizing antibody 2G12. Design, synthesis, and antibody binding study

  摘要：

  描述了一种新型模板组装的寡甘露聚糖簇的合成，该簇模仿了HIV中和抗体2G12的表位。这些新颖的寡甘露聚糖簇成功地在一个环状十肽模板上组装，采用了铜(I)催化的叠氮化物与炔烃的1,3-极性环加成反应，通过在模板的一侧引入四个单位的合成D1臂四糖（Manα1,2Manα1,2Manα1,3Manα-）和在另一侧引入两个T辅助表位肽。使用表面等离子共振（SPR）技术研究了它们与人抗体2G12的结合。研究发现，虽然合成的单体D1臂寡糖及其氟化衍生物与2G12的相互作用非常弱，但相应的模板组装的寡糖簇对抗体2G12显示出高亲和力，表明在2G12识别中存在明显的聚集效应。有趣的是，氟化D1臂簇中末端甘露糖残基的6-OH被氟原子取代时，与天然D1臂寡糖簇相比，其在与2G12结合时展现出明显不同的动力学模型。具有不同长度间隔链的寡糖簇对2G12的亲和力表现出不同，表明聚糖链在簇中的适当空间取向对于与抗体2G12的高亲和力结合至关重要。研究还发现，在模板上引入两个T辅助表位并没有影响寡甘露聚糖簇的结构完整性。这些新颖的合成糖 conjugates 代表了一种新型免疫原，可能能够引发针对HIV-1的特异性中和抗体。

  DOI：

  10.1039/b702961f
• 作为产物：
  描述：

  allyl 2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranoside 在 甲醇 、 乙酰氯 作用下， 以 二氯甲烷 为溶剂， 以75%的产率得到allyl 3,4,6-tri-O-benzoyl-α-D-mannopyranoside
  参考文献：
  名称：

  DNA模板的肽核酸编码的寡糖的同源和异源二聚化作用，模仿了HIV的碳水化合物表位

  摘要：

  全部受控制：杂交的可编程性已用于生成结构的组合文库，该文库模拟复杂碳水化合物与抗体相互作用的拓扑结构，该抗体显示出针对HIV的广谱活性。这种简单的方法涉及以受控方式将标记有肽核酸的寡糖附着到DNA模板上（请参见示意图）。

  DOI：

  10.1002/anie.200903328

文献信息

• Selection of a synthetic glycan oligomer from a library of DNA-templated fragments against DC-SIGN and inhibition of HIV gp120 binding to dendritic cells
  作者：Mihai Ciobanu、Kuo-Ting Huang、Jean-Pierre Daguer、Sofia Barluenga、Olivier Chaloin、Evelyne Schaeffer、Christopher G. Mueller、Daniel A. Mitchell、Nicolas Winssinger

  DOI：10.1039/c1cc13213j

  日期：——

  We report the synthesis of a nucleic acid-encoded carbohydrate library, its combinatorial self-assembly into 37 485 pairs and a screen against DC-SIGN leading to the identification of consensus ligand motifs. A prototypical example from the selected pairs was shown to have enhanced binding. A dendrimer incorporating the selected motifs inhibited gp120's binding to dendritic cells with higher efficiency than mannan.

  我们报告了核酸编码的碳水化合物文库的合成，其组合自组装成37,485对，并针对DC-SIGN进行筛选，从而确定了共识配体基序。从选定的配对中，我们展示了一个原型示例，其结合能力得到了增强。一种包含选定基序的树状大分子抑制了gp120与树突状细胞的结合，其效率高于甘露聚糖。
• Unusual α-glycosylation with galactosyl donors with a C2 ester capable of neighboring group participation
  作者：Langqiu Chen、Fanzuo Kong

  DOI：10.1016/s0040-4039(03)00673-7

  日期：2003.4

  6-O-benzylidene-1-thio-β-d-galactopyranoside (15) as the donor, glycosylation of 2 gave α-linked products only, indicating that 4,6-O-benzylidenation led to α-stereoselectivity in spite of the C2 ester capable of neighboring group participation. Using 15 as the donor, glycosylation of mannose derivatives with 2- or 3-OH's, glucose with 2- or 3-OH's, galactose with 2-, or 3-, or 4-OH's, glucosamine and glucuronic

  4-甲氧基苯基2,3,6-三-O-苯甲酰基-β-d-吡喃葡萄糖苷（2）与异丙基3 - O-烯丙基-2,4,6-三-O-苯甲酰基-（9）或6的糖基化- ø -烯丙基-2,3,4-三ö苯甲酰基-1-硫代β-d吡喃半乳糖苷（7）作为供体，得到的α-和β连接混合物，而用异丙3- ö -氯乙酰基-2- ø -苯甲酰基-4,6- ö -benzylidene-（13）和异丙基3- ö -烯丙基-2- ø -苯甲酰基-4,6- ø -亚苄基-1-硫代-β-β-d吡喃半乳糖苷（15）作为供体，2的糖基化仅产生α-连接的产物，表明尽管C2酯能够相邻基团参与，但4,6- O-亚苄基化仍导致α-立体选择性。使用15作为供体，甘露糖衍生物与2-或3-OH's进行糖基化，葡萄糖与2-或3-OH's进行葡萄糖基化，半乳糖与2-或3-或4-或4-OH's进行半乳糖苷，葡糖胺和葡萄糖醛酸与4-OH进行糖基化。 ，以及带有
• Facile syntheses of the hexasaccharide repeating unit of the exopolysaccharide from Cryptococcus neoformans serovar A
  作者：Jianjun Zhang、Fanzuo Kong

  DOI：10.1016/s0968-0896(03)00391-2

  日期：2003.9

  Two hexasaccharides, beta-D-Xyip-(1 --> 2)-alpha-D-Manp-(1 --> 3)-[beta-D-Xylp-(1 --> 42)-]alpha-D-Manp-(1--> 3)-[beta-D-GlcpA-(1 --> 2)-]alpha-D-Manp and beta-D-GlcpA-(1 --> 2)-[beta-D-Manp-(1 --> 3)-[beta-D-XylP-(1 --> 2)-]alpha-D-Manp-(1 --> 3)-]alpha-D-Manp, the repeating unit of the exopolysaccharide from Cryptococcus neoformans serovar A, were synthesized as their methyl glycosides in a regio- and stereoselective manner. (C) 2003 Elsevier Ltd. All rights reserved.
• First syntheses of d-mannose penta- and decasaccharides, the repeating unit and its dimer of the cell-wall mannan of Candida kefyr IFO 0586
  作者：Ying Xing、Jun Ning

  DOI：10.1016/s0957-4166(03)00216-7

  日期：2003.5

  alpha-D-Mannopyranosyl-(1-->2)-alpha-D-mannopyranosyl-(1-->6)-[alpha-D-mannopyranosyl-(1-->2)-alpha-D-mannopyranosyl-(1-->2)]-alpha-D-mannopyranose and alpha-D-mannopyranosyl-(1-->2)-alpha-D-mannopyranosyl-(1-->6)-[alpha-D-mannopyranosyl-(1-->2)-alpha-D-mannopyranosyl-(1-->2)]-alpha-D-mannopyranosyl-(1-->6)-[alpha-D-mannopyranosyl-(1-->2)]-alpha-D-marmopyranosyl-(1-->6)-[alpha-D-mannopyranosyl-(1-->2)-alpha-D-mannopyranosyl-(1-->2)]-alpha-D-mannopyranose, the repeating unit and its dimer of the cell wall mannan of the pathogenic yeast Candida kefyr IFO 0586, have been efficiently synthesized via their allyl glycosides by using allyl 3,4,6-tri-O-benzoyl-alpha-D-mannopyranoside, allyl 6-O-acetyl-3,4-di-O-benzoyl-alpha-D-mannopyranoside, and allyl 3,4-di-O-benzoyl-alpha-D-mannopyranoside as synthons. The blocked pentasaccharide was regio- and stereoselectively prepared by coupling of allyl 3,4-di-O-benzoyl-alpha-D-mannopyranoside with 2,3,4,6-tetra-O-benzoyl-alpha-D-mannopyranosyl-(1-->2)-6-O-acetyl-3,4-di-O-benzoyl-alpha-D-mannopyranosyl trichloroacetimidate, and then with 2,3,4,6-tetra-O-benzoyl-alpha-D-mannopyranosyl-(1-->2)-3,4,6-tri-O-benzoyl-alpha-D-mannopyranosyl trichloroacetimidate in a one-pot manner. (C) 2003 Elsevier Science Ltd. All rights reserved.
• Facile synthesis of arabinomannose penta- and decasaccharide fragments of the lipoarabinomannan of the equine pathogen, Rhodococcus equi
  作者：Zuchao Ma、Jianjun Zhang、Fanzuo Kong

  DOI：10.1016/j.carres.2004.04.012

  日期：2004.7

  Pentasaccharide repeating unit 20 of the lipoarabinomannan from the equine pathogen, Rhodococcus equi, and its dimer 31, were synthesized. The pentasaccharide was obtained by assembling a benzoylated 2,6-branched mannosyl trisaccharide acceptor 13 with a free hydroxyl group at C-2' of the mannose residue attached to the core mannose residue by (1 --> 6)-linkage, followed by coupling with 2,3,5-tri-O-benzoyl-alpha-D-arabinofuranosyl-(1 --> 2)-3,4,6-tri-O-benzoyl-alpha-D-mannopyranosyl trichloroacetimidate (18), and by deacylation. Meanwhile, the decamer 31 was obtained by firstly preparing a benzoylated mannose (1 --> 6)-linked tetra-saccharide backbone 26 with 2-, 2"-O-ClAc, and 2'-, 2"'-O-Ac groups, respectively, then by dechloroacetylation and subsequent condensation with perbenzoylated trichloroacetimidate, and then by deacetylation and subsequent coupling with 18, and finally, by deacylation. (C) 2004 Elsevier Ltd. All rights reserved.