2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl 2,2,2-trichloroacetimidate | 324041-49-8

• 分子结构分类: 有机化合物 - 有机酸及其衍生物 - 羧酸及其衍生物
• 英文名称: 2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl 2,2,2-trichloroacetimidate
• 英文别名: 2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl trichloroacetimidate；2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl,trichloroacetamidate；Bz(-3)[Bz(-4)][Bz(-6)]Man2Ac(a)-O-C(NH)CCl3；[(2R,3R,4S,5S,6R)-5-acetyloxy-3,4-dibenzoyloxy-6-(2,2,2-trichloroethanimidoyl)oxyoxan-2-yl]methyl benzoate
• CAS: 324041-49-8
• 化学式: C₃₁H₂₆Cl₃NO₁₀
• 分子量: 678.907
• InChiKey: IMYOEWKGDPJXJQ-SSBCBVQQSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.5
• 重原子数：
  45
• 可旋转键数：
  14
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  148
• 氢给体数：
  1
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl 2,2,2-trichloroacetimidate 在 盐酸 、 三氟甲磺酸三甲基硅酯 作用下， 以 甲醇 、 二氯甲烷 为溶剂， 生成 Bz(-3)[Bz(-4)][Bz(-6)]Man(a1-6)[Bz(-2)][Bz(-3)][Bz(-4)]Man(a)-O-Bz
  参考文献：
  名称：

  从克氏锥虫的脂质中含有不饱和脂肪酸的生物活性糖基磷脂酰肌醇的化学合成。

  摘要：

  DOI：

  10.1002/anie.200502779
• 作为产物：
  描述：

  1,2-di-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranose 在 1,8-二氮杂双环[5.4.0]十一碳-7-烯 、 苄胺 作用下， 以 四氢呋喃 、 二氯甲烷 为溶剂， 反应 29.0h， 生成 2-O-acetyl-3,4,6-tri-O-benzoyl-α-D-mannopyranosyl 2,2,2-trichloroacetimidate
  参考文献：
  名称：

  SYNTHESIS OF A MANNOTETRAOSE—THE REPEATING UNIT OF THE CELL-WALL MANNANS OF MICROSPORUM GYPSEUM AND RELATED SPECIES OF TRYCHOPHYTON

  摘要：

  A tetrasaccharide, alpha -D-mannopyranosyl-(1 -->2)-alpha -D-mannopyranosyl-(1 -->6)-alpha -D-mannopyranosyl-(1 -->6)-D-maanopyranose (1), the repeating unit of the cell-wall mannans of Microsporum gypseum and related species of Trychophyton, was synthesized using 6-O-acetyl-2,3,4-tri-O-benzoyl-alpha -D-mannopyranosyl trichloroacetimidate (5) and 2-O-acetyl-3,4,6-tri-O-benzoyl-alpha -D-mannopyranosyl trichloroacetimidate (13) as the glycosyl donors in "the inverse Schmidt 'procedure.

  DOI：

  10.1081/car-100104864

文献信息

• Synthesis of glycoconjugate fragments of mycobacterial phosphatidylinositol mannosides and lipomannan
  作者：Benjamin Cao、Jonathan M White、Spencer J Williams

  DOI：10.3762/bjoc.7.47

  日期：——

  with host cells. We report the efficient synthesis of a series of azidooctyl di- and trimannosides possessing the following glycan structures: alpha-Man-1,6-alpha-Man, alpha-Man-1,6-alpha-Man-1,6-alpha-Man, alpha-Man-1,2-alpha-Man-1,6-alpha-Man and 2,6-di-(alpha-Man)-alpha-Man. The synthesis includes the use of non-benzyl protecting groups compatible with the azido group and preparation of the branched

  结核分枝杆菌是结核病 (TB) 的病原体，具有复杂的细胞壁，细胞壁含有富含甘露糖的糖磷脂，称为磷脂酰肌醇甘露糖苷 (PIM)、脂甘露聚糖 (LM) 和脂阿拉伯甘露聚糖 (LAM)。这些糖磷脂在细胞壁功能和宿主-病原体相互作用中起重要作用。合成 PIM/LM/LAM 子结构是描绘和剖析甘露糖糖磷脂生物合成及其与宿主细胞相互作用的精细细节的有用生化工具。我们报告了一系列具有以下聚糖结构的叠氮辛基二和三甘露糖苷的有效合成：alpha-Man-1,6-alpha-Man、alpha-Man-1,6-alpha-Man-1,6-alpha-人，alpha-Man-1,2-alpha-Man-1,6-alpha-Man 和 2,6-di-(alpha-Man)-alpha-Man。该合成包括使用与叠氮基相容的非苄基保护基团，以及通过 3,4-丁二缩醛的双糖基化制备支链三糖结构 2,6-二-(α-Man
• Novel template-assembled oligosaccharide clusters as epitope mimics for HIV-neutralizing antibody 2G12. Design, synthesis, and antibody binding study
  作者：Jingsong Wang、Hengguang Li、Guozhang Zou、Lai-Xi Wang

  DOI：10.1039/b702961f

  日期：——

  The synthesis of a new class of template-assembled oligomannose clusters as the mimics of the epitope of the HIV-neutralizing antibody 2G12 is described. The novel oligomannose clusters were successfully assembled on a cyclic decapeptide template using the Cu(I)-catalyzed 1,3-dipolar cycloaddition of azides to alkynes by introducing four units of a synthetic D1 arm tetrasaccharide (Manα1,2Manα1,2Manα1,3Manα-) of high-mannose N-glycan on one face of the template and two T-helper epitope peptides on the other face of the template. Their binding to human antibody 2G12 was studied using surface plasmon resonance (SPR) technology. It was found that while the synthetic monomeric D1 arm oligosaccharide and its fluorinated derivative interacted with 2G12 only weakly, the corresponding template-assembled oligosaccharide clusters showed high affinity to antibody 2G12, indicating a clear clustering effect in 2G12 recognition. Interestingly, the fluorinated D1 arm cluster, in which the 6-OH of the terminal mannosyl residue was replaced with a fluorine atom, showed a distinct kinetic model in 2G12 binding as compared with the cluster of the natural D1 arm oligosaccharides. The oligosaccharide clusters with varied length of spacer demonstrated different affinity to 2G12, suggesting that an appropriate spatial orientation of the sugar chains in the cluster was crucial for high affinity binding to the antibody 2G12. It was also found that the introduction of two T-helper epitopes onto the template did not affect the structural integrity of the oligomannose cluster. The novel synthetic glycoconjugates represent a new type of immunogen that may be able to raise carbohydrate-specific neutralizing antibodies against HIV-1.

  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。
• DNA-Templated Homo- and Heterodimerization of Peptide Nucleic Acid Encoded Oligosaccharides that Mimick the Carbohydrate Epitope of HIV
  作者：Katarzyna Gorska、Kuo-Ting Huang、Olivier Chaloin、Nicolas Winssinger

  DOI：10.1002/anie.200903328

  日期：2009.9.28

  hybridization has been utilized to generate a combinatorial library of structures that emulate the topologies of complex carbohydrates interacting with an antibody that shows broad‐spectrum activity against HIV. This simple method involves attaching oligosaccharides tagged with peptide nucleic acids onto DNA templates in a controlled manner (see schematic picture).

  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）。
• A facile regio- and stereoselective synthesis of mannose octasaccharide of the N-glycan in human CD2 and mannose hexasaccharide antigenic factor 13b
  作者：Yuliang Zhu、Langqiu Chen、Fanzuo Kong

  DOI：10.1016/s0008-6215(01)00307-x

  日期：2002.2

  A highly concise and effective synthesis of the mannose octasaccharide of the N-linked glycan in the adhesion domain of human CD2 was achieved via TMSOTf-promoted selective 6-glycosylation of a trisaccharide 4,6-diol acceptor with a pentasaccharide donor, followed by deprotection. The pentasaccharide was constructed by selective 3,6-diglycosylation of 1,2-O-ethylidene-beta-D-mannopyranose with 2-O-acetyl-3

  通过TMSOTf促进三糖4,6-二醇受体与五糖供体的选择性6-糖基化，然后脱保护，实现了在人CD2粘附域中N-连接聚糖的甘露糖八糖的高度简洁和有效的合成。 。通过用2-O-乙酰基-3,4,6-三-O-苯甲酰基-α-D-甘露吡喃糖基-对1,2-O-亚乙基-β-D-甘露吡喃糖进行选择性3,6-二糖基化来构建五糖。 （1-> 2）-3,4,6-三-O-苯甲酰基-α-D-甘露吡喃糖基三氯乙酰亚胺酸酯，而三糖是通过烯丙基4,6-O-亚苄基-α的选择性3-O-糖基化获得的-D-甘露吡喃糖苷与相同的二糖三氯乙酰亚胺酸酯，然后进行脱苄基作用。甘露糖六糖抗原因子13b是通过三糖供体2-O-乙酰-3,4，
• Synthesis of a 6V-sulfated mannopentasaccharide analogue related to PI-88
  作者：Guofeng Gu、Guohua Wei、Yuguo Du

  DOI：10.1016/j.carres.2004.01.020

  日期：2004.4

  convergent synthesis of a regioselectively 6(V)-sulfated mannopentasaccharide derivative 1c, octyl 6-O-sulfo-alpha-D-mannopyranosyl-(1-->3)-alpha-D-mannopyranosyl-(1-->3)-alpha-d-m annopyranosyl-(1-->3)-alpha-D-mannopyranosyl-(1-->2)-alpha-D-mannopyranoside, was achieved by a '3 + 2' strategy. The target was designed to mimic the promising anticancer agent PI-88 and was obtained from the building blocks

  一种高效且收敛的区域选择性合成6（V）-硫酸化的甘露糖衍生物1c，辛基6-O-磺基-α-D-甘露吡喃糖基-（1-> 3）-α-D-甘露吡喃糖基-（1-> 3）-α-dm氨基吡喃糖基-（1→3）-α-D-甘露吡喃糖基-（1→2）-α-D-甘露吡喃糖苷是通过'3 + 2'策略获得的。该靶标旨在模仿有希望的抗癌药PI-88，并从3,4,6-三-O-苯甲酰基-α-D-甘露吡喃糖辛基，2,4,6-三烯丙基烯丙基中获得。在TMSOTf下-苯甲酰基-3-O-（4-甲氧基苄基）-α-D-甘露吡喃糖苷和6-O-乙酰基-2,3,4-三-O-苯甲酰基-α-D-甘露吡喃糖基三氯乙酰亚胺酸酯（11） -催化的糖基化条件。根据绒毛膜尿囊膜（CAM）模型研究，化合物1c显示出适度的抗血管生成活性。