methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside | 96093-11-7

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 吡喃二恶英
• 英文名称: methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside
• 英文别名: (2S,4aR,6R,7R,8R,8aR)-7-azido-6-methoxy-2-phenyl-4,4a,6,7,8,8a-hexahydropyrano[3,2-d][1,3]dioxin-8-ol
• CAS: 96093-11-7
• 化学式: C₁₄H₁₇N₃O₅
• 分子量: 307.306
• InChiKey: WCSBCLMCXJSBOJ-IZMFDJJNSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.4
• 重原子数：
  22
• 可旋转键数：
  3
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  71.5
• 氢给体数：
  1
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside 在 吡啶 、 三氟甲磺酸三甲基硅酯 、 硫酸 、 溶剂黄146 作用下， 以 二氯甲烷 为溶剂， 生成
  参考文献：
  名称：

  Chemoselectively template-assembled glycopeptide presenting clustered cancer related T-antigen

  摘要：

  The first synthesis of the tumor-associated alpha-aminooxy T-antigen 1, a relevant recognition motif for the direct construction of multitopic carbohydrate architecture of biological interest is described. The usefulness of this building block is emphasized with the efficient preparation through oxime ligation of a neoglycopeptide cluster, which is readily suitable for evaluating the role of multivalency in antigen presentation to the immune system from an anticancer vaccine perspective. (C) 2003 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2003.10.126
• 作为产物：
  描述：

  3,4,6-tri-O-acetyl-2-azido-2-deoxy-alpha-D-galactopyranosyl bromide 在 sodium methylate 、 silver carbonate 作用下， 以 甲醇 、 乙腈 为溶剂， 反应 14.0h， 生成 methyl 2-azido-4,6-O-benzylidene-2-deoxy-β-D-galactopyranoside
  参考文献：
  名称：

  拥挤的双磷酸化摩根氏菌两性离子三糖重复单元的全合成

  摘要：

  两性离子多糖 (ZPS) 通过主要组织相容性复合体 II 类呈递激活 T 细胞依赖性免疫反应。在此，我们报告了摩根氏菌 ZPS 重复单元的首次合成，作为合成新型 ZPS 材料的有利工具。重复单元包含一个 1,2-顺式-α-糖苷键；有问题的 1,2-反式半乳糖苷键，Gal-β(1→3)-GalNAc；和磷酸甘油和磷酸胆碱残基，它们以前没有被观察到作为同一寡糖上的官能团。成功的第三代方法利用了磷酸甘油功能化受体的一流糖基化。为了安装磷酸胆碱单元，合成了一种高效的磷酸胆碱供体。

  DOI：

  10.1021/jacs.9b06830

文献信息

• Synthesis of disaccharide congeners of the <i>Trichinella spiralis</i> glycan and binding site mapping of two monoclonal antibodies
  作者：Ping Zhang、Judith Appleton、Chang-Chun Ling、David R Bundle

  DOI：10.1139/v02-117

  日期：2002.8.1

  The tetrasaccharide epitope, β-D-Tyvp(1[Formula: see text]3)β-D-GalNAcp(1[Formula: see text]4)[α-L-Fucp(1[Formula: see text]3)]β-D-GlcNAcp (1) is the major constituent of the N-glycan expressed on the cell surface of the parasite Trichinella spiralis. Two monoclonal antibodies (Mabs 9D4 and 18H1) that protect rats against infection by T. spiralis bind the terminal disaccharide epitope β-D-Tyvp(1[Formula: see text]3)β-D-GalNAcp conjugated to BSA. The syntheses of disaccharide congeners containing mono-deoxy, mono-methyl, as well as modifications to replace the acetamido group are reported. These target disaccharides were assayed for binding to the protective MAbs. For each antibody different clusters of three hydroxyl groups, that include C-2 and C-4 of tyvelose and for 18H1, the GalNAc acetamido group, provide the key polar interactions with the antibody binding sites. Mapping of the sites by functional group replacement revealed a similar pattern of recognition for the dideoxyhexose by the two MAbs while each recognizes distinct surfaces of the GalNAc residue. Consequently although both antibodies bury the 4-OH of tyvelose, the principal contact surface occurs on opposite sides of the 3,6-dideoxyhexose.Key words: β-tyveloside, 3,6-dideoxy-D-arabino-hexose, Trichinella carbohydrate antigen, antibody mapping, Trichinella spiralis, N-glycans, molecular recognition of carbohydrates, antigen topology, functional group replacement.

  四糖基表位，β-D-Tyvp（1 [Formula：see text] 3）β-D-GalNAcp（1 [Formula：see text] 4）[α-L-Fucp（1 [Formula：see text] 3）]β-D-GlcNAcp（1）是寄生虫旋毛虫细胞表面表达的N-糖基的主要成分。两种单克隆抗体（Mabs 9D4和18H1）能保护大鼠免受旋毛虫感染，它们结合到与BSA结合的终端二糖基表位β-D-Tyvp（1 [Formula：see text] 3）β-D-GalNAcp。报道了含有单脱氧，单甲基以及替换乙酰胺基团的修饰的二糖类似物的合成。对这些靶向二糖的结合进行了保护MAbs的测定。对于每种抗体，包括tyvelose的C-2和C-4以及18H1的GalNAc乙酰胺基团的三个羟基团簇提供了与抗体结合位点的关键极性相互作用。通过功能团替换的映射表明，两种MAbs对于二脱氧己糖的识别模式相似，而每种MAbs都识别GalNAc残基的不同表面。因此，尽管两种抗体都掩埋了tyvelose的4-OH，但主要接触表面出现在3,6-二脱氧己糖的相反侧。 关键词：β-tyveloside，3,6-二脱氧-D-阿拉伯糖，旋毛虫糖原抗原，抗体映射，旋毛虫，N-糖基，碳水化合物的分子识别，抗原拓扑，功能团替换。
• Regioselective Glycosylation of Glucosamine and Galactosamine Derivates Using O-Pivaloyl Galactosyl Donors
  作者：Mathia Oßwald、Uwe Lang、Siglinde Friedrich-Bochnitschek、Waldemar Pfrengle、Horst Kunz

  DOI：10.1515/znb-2003-0808

  日期：2003.8.1

  Penta-O-pivaloyl-galactopyranose and tetra-O-pivaloyl-galactopyranosyl bromide after electrophilic activation reacted with 6-O-protected 2-azido-galactosides to give the precursor structures of the Thomsen-Friedenreich antigen disaccharide with high regioselectivity, but low yield.With 4,6-Obenzylidene protected 2-azidogalactosides and 2-O-pivaloyl phenylthio galactosides, T-antigen disaccharides of this type were obtained in good yields. Glycosylation reactions of 4,6-O-benzylidene protected glucosamine derivatives with O-pivaloyl protected galactosyl bromide efficiently gave lactolactosamine disaccharides. Even a thioglycoside was efficiently galactosylated by this method resulting in the formation of a disaccharide thioglycoside useful itself as a potential glycosyl donor.

  Penta-O-pivaloyl-galactopyranose和tetra-O-pivaloyl-galactopyranosyl溴在亲电活化后与6-O-保护的2-azido-galactosides反应，高选择性地形成Thomsen-Friedenreich抗原二糖的前体结构，但产率较低。使用4,6-Obenzylidene保护的2-azidogalactosides和2-O-pivaloyl苯硫基半乳苷，可以得到这种类型的T-抗原二糖，产率较高。4,6-O-benzylidene保护的葡萄糖氨基衍生物与O-pivaloyl保护的半乳苷溴的糖基化反应有效地产生了乳糖氨二糖。甚至通过这种方法，一种硫代糖苷也可以有效地被半乳苷化，形成一种作为潜在糖基供体的二糖硫代糖苷。
• Synthesis of the Forssman pentasaccharide and terminal tetra-, tri-, and di-saccharide fragments
  作者：Ulf Nilsson、Asim K. Ray、Göran Magnusson

  DOI：10.1016/0008-6215(94)90011-6

  日期：1994.1

  The 2-(trimethylsilyl)ethyl (TMSEt) beta-glycosides of the Forssman pentasaccharide [alpha-D-GalNAc-(1-->3)-beta-D-GalNAc-(1-->3)-alpha-D-Gal- (1-->4)-beta-D-Gal-(1-->4)-D-Glc] and the terminal tetrasaccharide, as well as the methyl glycosides 1 and 2 of the terminal di- and tri-saccharides, were synthesised by silver trifluoromethanesulfonate-promoted alpha-glycosylation of suitably protected mono-

  福斯曼五糖[α-D-GalNAc-（1-> 3）-β-D-GalNAc-（1-> 3）-alpha-D-的2-（三甲基甲硅烷基）乙基（TMSEt）β-糖苷Gal-（1-> 4）-beta-D-Gal-（1-> 4）-D-Glc]和末端四糖，以及末端di-和tri-的甲基糖苷1和2通过三氟甲磺酸银促进适当保护的单糖，二糖，三糖和四糖醇与3,4,6-三-O-乙酰基-2-叠氮基-2-脱氧-α-糖基化的α-糖基化反应合成糖D-吡喃半乳糖基溴化物，然后除去保护基。用三氟乙酸-二氯甲烷除去Forssman五糖和末端四糖的异头TMSEt基团，得到相应的半缩醛糖4和6。
• A novel class of glycosyl donors: Anomeric S-xanthates of 2-azido-2-deoxy-D-galactopyranosyl derivatives
  作者：Alberto Marra、Françoise Gauffeny、Pierre Sinaÿ

  DOI：10.1016/s0040-4020(01)87127-1

  日期：1991.1

  lactopyranosyl) dithiocarbonates have been easily prepared via a two-step azidoxanthation reaction of the corresponding galactals (1,5-anhydro-2-deoxy-D-lyxo-hex-1-enitols).They are efficient glycosyl donors for the stereoselective synthesis of protected precursors of biologically important galactosamine-containing oligosaccharides.

  通过相应半乳糖（1,5-脱水-2-脱氧-D- lyxo）的两步叠氮蒽并化反应，可以轻松制备各种取代的O-乙基S-（2-叠氮基-2-脱氧-D-吡喃半乳糖基）二硫代碳酸酯。（-hex-1-enitols）。它们是有效的糖基供体，用于立体选择性地合成具有生物学重要性的含半乳糖胺的寡糖的保护前体。
• Synthesis of glycopeptide sequences of repeating units of the mucins MUC 2 and MUC 3 containing oligosaccharide side-chains with core 1, core 2, core 3, core 4 and core 6 structure
  作者：Nathalie Mathieux、Hans Paulsen、Morten Meldal、Klaus Bock

  DOI：10.1039/a701742a

  日期：——

  An efficient synthesis of glycosylamino acid building blocks containing core 1, core 2, core 3, core 4 or core 6 mucin core oligosaccharide structures linked O-glycosidically to threonine has been developed. These building blocks 6, 10, 16, 24 and 30 can be used directly for coupling reactions in a glycopeptide synthesis. In a multiple-column solid-phase synthesis, they have been used to prepare different series of glycopeptides. Decapeptide sequences have been synthesized from repeating units of the mucins MUC 2 and MUC 3 in which different threonine residues are each systematically glycosylated with an oligosaccharide of core 1, core 2, core 3, core 4 or core 6 structure. Glycopeptides are substrates for the study of the biosynthesis of the saccharide side-chains of mucins.

  我们开发出了一种高效合成糖基氨基酸构件的方法，这种构件含有核心 1、核心 2、核心 3、核心 4 或核心 6 与苏氨酸以 O 型糖苷键相连的粘蛋白核心寡糖结构。这些构建模块 6、10、16、24 和 30 可直接用于糖肽合成中的偶联反应。在多柱固相合成中，它们被用来制备不同系列的糖肽。十肽序列是由粘蛋白 MUC 2 和 MUC 3 的重复单元合成的，其中不同的苏氨酸残基分别与核心 1、核心 2、核心 3、核心 4 或核心 6 结构的寡糖系统地糖基化。糖肽是研究粘蛋白糖侧链生物合成的底物。