4-methoxyphenyl 2,3-di-O-benzoyl-β-D-glucopyranoside | 1200878-78-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 4-methoxyphenyl 2,3-di-O-benzoyl-β-D-glucopyranoside
• 英文别名: [(2R,3R,4S,5R,6S)-5-benzoyloxy-3-hydroxy-2-(hydroxymethyl)-6-(4-methoxyphenoxy)oxan-4-yl] benzoate
• CAS: 1200878-78-9
• 化学式: C₂₇H₂₆O₉
• 分子量: 494.498
• InChiKey: NBQCSAIRNVWHQY-YIHAFMAISA-N

物化性质

• 沸点：
  697.3±55.0 °C(predicted)
• 密度：
  1.37±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  3.7
• 重原子数：
  36
• 可旋转键数：
  10
• 环数：
  4.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  121
• 氢给体数：
  2
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  4-methoxyphenyl 2,3-di-O-benzoyl-β-D-glucopyranoside 在 2,4-二甲基吡啶 、 三氟甲磺酸三甲基硅酯 、 2-氯-1-甲基吡啶碘化物 、 硫脲 作用下， 以 甲醇 、 二氯甲烷 、 氯仿 、 1,2-二氯乙烷 为溶剂， 反应 8.83h， 生成 p-methoxyphenyl 4,6-di-O-benzylidene-2-deoxy-2-phthalimido-β-D-glucopyranosyl-(1→4)-2,3-di-O-benzoyl-6-O-levulinoyl-β-D-glucopyranoside
  参考文献：
  名称：

  Synthesis and Immunological Characterization of Modified Hyaluronic Acid Hexasaccharide Conjugates

  摘要：

  The synthesis of a tetanus toxoid (TT)-conjugate of a hyaluronic acid (HA) hexasaccharide is described. The compound was intended for use in monitoring HA levels as a disease marker and as a potential vaccine against Group A Streptococcus (GAS) infections. We also report the synthesis of a chemically modified HA-hexasaccharide-TT conjugate in which the N-acetyl moiety of the N-acetyl-D-glucosamine residue is replaced with an N-propionyl unit in order to enhance immunogenicity. The oligosaccharides are synthesized in a convergent manner. The TT-conjugate syntheses rely on the reaction of the amines on the 6-aminohexyl aglycon of the hexasaccharides with diethyl squarate to give the monoethyl squarate adducts. Subsequent reactions with lysine epsilon-amino groups on TT then give the glycoconjugates containing an average of 8 hexasaccharide haptens per TT molecule. Immunological studies in mice show very similar antibody responses with both conjugates, suggesting that the N-acetyl groups of the glucosaminyl residues of the HA-hexasaccharide are not a critical part of the epitope recognized by the anti-HA polyclonal immune response. Furthermore, it would appear that the N-acyl moieties are not in close contact with the amino acid residues of the antibody combining sites.

  DOI：

  10.1021/jo4012442
• 作为产物：
  描述：

  4-甲氧基苯基Β-D-吡喃葡萄糖苷 在 吡啶 、 对甲苯磺酸 、 溶剂黄146 作用下， 以 二氯甲烷 、 氯仿 、 N,N-二甲基甲酰胺 为溶剂， 反应 1.0h， 生成 4-methoxyphenyl 2,3-di-O-benzoyl-β-D-glucopyranoside
  参考文献：
  名称：

  Synthesis and Immunological Characterization of Modified Hyaluronic Acid Hexasaccharide Conjugates

  摘要：

  The synthesis of a tetanus toxoid (TT)-conjugate of a hyaluronic acid (HA) hexasaccharide is described. The compound was intended for use in monitoring HA levels as a disease marker and as a potential vaccine against Group A Streptococcus (GAS) infections. We also report the synthesis of a chemically modified HA-hexasaccharide-TT conjugate in which the N-acetyl moiety of the N-acetyl-D-glucosamine residue is replaced with an N-propionyl unit in order to enhance immunogenicity. The oligosaccharides are synthesized in a convergent manner. The TT-conjugate syntheses rely on the reaction of the amines on the 6-aminohexyl aglycon of the hexasaccharides with diethyl squarate to give the monoethyl squarate adducts. Subsequent reactions with lysine epsilon-amino groups on TT then give the glycoconjugates containing an average of 8 hexasaccharide haptens per TT molecule. Immunological studies in mice show very similar antibody responses with both conjugates, suggesting that the N-acetyl groups of the glucosaminyl residues of the HA-hexasaccharide are not a critical part of the epitope recognized by the anti-HA polyclonal immune response. Furthermore, it would appear that the N-acyl moieties are not in close contact with the amino acid residues of the antibody combining sites.

  DOI：

  10.1021/jo4012442

文献信息

• Total Synthesis of Echinoside A, a Representative Triterpene Glycoside of Sea Cucumbers
  作者：Xiaoping Chen、Xiaofei Shao、Wei Li、Xiaheng Zhang、Biao Yu

  DOI：10.1002/anie.201703610

  日期：2017.6.19

  adaptable to the synthesis of congeners and analogues, as exemplified by the ready synthesis of ds‐echinoside A and echinoside B, and thus will facilitate in‐depth studies on the promising biological effects of echinoside A. Moreover, the present synthesis demonstrates the feasibility of synthetic access to the characteristic complex triterpene glycosides that occur ubiquitously in sea cucumbers.

  Echinoside A是一种具有有效的抗癌和抗真菌活性的磺酰化的holostane四糖，它以最长的线性序列（35步）和0.6％的总收率合成。合成方法适用于同类物和类似物的合成，如ds-echinoside A和echinoside B的现成合成所例示的，因此将有助于深入研究蛇毒苷A的有前途的生物学效应。此外，本合成证明了合成获取海参中普遍存在的特征性复杂三萜糖苷的可行性。
• A simple and selective method for the O-AcCl removal using sodium borohydride
  作者：Emmanuelle Villedieu、Chrystel Lopin-Bon、Sabine Berteina-Raboin

  DOI：10.1016/j.tetlet.2010.02.057

  日期：2010.4

  A deprotection of chloroacetylated alcohols using NaBH4 is reported. The free alcohols are obtained in excellent yields. The reaction was performed on primary, secondary, alkyl, allyl, benzylic alcohols and phenols. The compatibility of the method with other sensitive or protective groups is demonstrated.

  据报道，使用NaBH 4使氯乙酰化醇脱保护。以优异的产率获得游离醇。反应在伯，仲，烷基，烯丙基，苯甲醇和苯酚上进行。证明了该方法与其他敏感或保护基团的相容性。
• Multiple and Regioselective Introduction of Protected Sulfates into Carbohydrates Using Sulfuryl Imidazolium Salts
  作者：Ahmed Y. Desoky、Scott D. Taylor

  DOI：10.1021/jo901882f

  日期：2009.12.18

  Selective incorporation of trichloroethyl (TCE)-protected sulfates into monosaccharides was examined using reagent 2. In general, sulfation of 4,6-O-benzylidene acetals of galactosides and glucosides (2-OH versus 3-OH sulfations) proceeded in good to excellent yield and selectivity. Sulfation occurred predominantly at the 2-OH in 4,6-O-benzylidene acetals of α-glucosides and at the 3-OH in 4,6-O-benzylidene

  使用试剂2检查了三氯乙基（TCE）保护的硫酸盐到单糖中的选择性掺入。通常，半乳糖苷和葡糖苷的4，6- O-亚苄基乙缩醛的硫酸化（2-OH对3-OH的硫酸化）以良好的收率和优异的选择性进行。硫酸化主要发生在α-葡萄糖苷的4,6- O-亚苄基乙缩醛中的2-OH和β-半乳糖苷和β-葡萄糖苷的4,6- O-亚苄基乙缩醛中的3-OH 。在糖苷和半乳糖苷的3,4-二醇中的3-OH也获得了良好的收率和选择性。带有2-氨基部分和6-OH基团的葡糖苷主要产生N-硫酸化产物，产率高。通常还可以良好的收率和选择性实现在带有一个或两个自由仲羟基的半乳糖和葡萄糖衍生物中伯6-羟基的选择性硫酸化。试剂2对于糖苷和半乳糖苷的二醇的直接脱硫也是有效的，并且可以从脱硫的化合物制备三硫酸化的单糖。
• Chemical Synthesis of a Colanic Acid Hexasaccharide
  作者：Xin Zhang、Peng Xu、Biao Yu

  DOI：10.1021/acs.orglett.2c03116

  日期：2022.10.28

  Chemical synthesis of a hexasaccharide relevant to colanic acid, which bears a high prevalence of polyanionic and acetyl decoration, has been achieved, highlighting stereoselective glycosylation and effective installation of O-acetyl and pyruvate residues.

  已经实现了与 colanic 酸相关的六糖的化学合成，其具有高度普遍的聚阴离子和乙酰基修饰，突出了立体选择性糖基化和O-乙酰基和丙酮酸残基的有效安装。
• A Cu(OTf)₂-Catalyzed Glycosylation with Glycosyl <i>ortho</i>-<i>N</i>-Phthalimidoylpropynyl Benzoates as Donors
  作者：Bei-Bei Zhan、Kai-Sheng Xie、Qian Zhu、Weiping Zhou、Dapeng Zhu、Biao Yu

  DOI：10.1021/acs.orglett.3c01163

  日期：2023.6.2

  A Cu(OTf)2-catalyzed glycosylation protocol using glycosyl ortho-N-phthalimidoylpropynyl benzoates (NPPBs) as donors was disclosed, which features an inexpensive copper catalyst, operationally convenient conditions, high to excellent yields, and a broad substrate scope. Mechanistic studies indicated an isochromen-4-yl copper(II) intermediate arising from the departure of the leaving group.

  公开了一种使用糖基邻-N-邻苯二甲酰亚胺基丙炔基苯甲酸酯 (NPPB) 作为供体的Cu(OTf) 2催化糖基化方案，该方案具有廉价的铜催化剂、操作方便的条件、高至优异的产率和广泛的底物范围。机理研究表明离去基团的离去产生了 isochrome-4-yl copper(II) 中间体。