methyl 2-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-3,4,6-tri-O-benzyl-α-D-glucopyranoside

• 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: methyl 2-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-3,4,6-tri-O-benzyl-α-D-glucopyranoside
• 英文别名: Bz(-2)[Bz(-3)][Bz(-4)][Bz(-6)]Glc(b1-2)[Bn(-3)][Bn(-4)][Bn(-6)]a-Glc1Me；[(2R,3R,4S,5R,6S)-3,4,5-tribenzoyloxy-6-[(2S,3R,4S,5R,6R)-2-methoxy-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-3-yl]oxyoxan-2-yl]methyl benzoate
• 化学式: C₆₂H₅₈O₁₅
• 分子量: 1043.13
• InChiKey: XZYMVXKBZCCRKH-ZQGVGXTDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.3
• 重原子数：
  77
• 可旋转键数：
  26
• 环数：
  9.0
• sp3杂化的碳原子比例：
  0.26
• 拓扑面积：
  170
• 氢给体数：
  0
• 氢受体数：
  15

反应信息

• 作为产物：
  描述：

  ethyl 2,3,4,6-tetra-O-benzoyl-1-thio-β-D-glucopyranoside 在 18-冠醚-6 作用下， 以 二氯甲烷 、 1,2-二氯乙烷 、 乙腈 为溶剂， 反应 20.08h， 生成 methyl 2-O-(2,3,4,6-tetra-O-benzoyl-β-D-glucopyranosyl)-3,4,6-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  S-苯并咪唑基糖苷作为活性-潜在策略合成寡糖的平台

  摘要：

  开展业务：S-苯并咪唑基 (SBiz) 异头部分是一种新的离去基团，可以在多种条件下被激活进行糖基化，包括金属辅助和烷基化途径。应用取代的 SBiz 部分（X=苯甲酰基，见图）可实现活性-潜在和武装-解除武装类型的寡糖组装。

  DOI：

  10.1002/anie.201007212

文献信息

• Bismuth(<scp>iii</scp>) triflate as a novel and efficient activator for glycosyl halides
  作者：Hayley B. Steber、Yashapal Singh、Alexei V. Demchenko

  DOI：10.1039/d1ob00093d

  日期：——

  Presented herein is the discovery that bismuth(III) trifluoromethanesulfonate (Bi(OTf)3) is an effective catalyst for the activation of glycosyl bromides and glycosyl chlorides. The key objective for the development of this methodology is to employ only one promoter in the lowest possible amount and to avoid using any additive/co-catalyst/acid scavenger except molecular sieves. Bi(OTf)3 works well

  本文提出了三氟甲磺酸铋( III )(Bi(OTf) 3 )是用于活化糖基溴和糖基氯的有效催化剂的发现。开发该方法的关键目标是仅使用尽可能低量的一种促进剂，并避免使用除分子筛之外的任何添加剂/助催化剂/酸清除剂。 Bi(OTf) 3在促进差异保护的葡萄糖基、半乳糖基和甘露糖基卤化物与多种糖基受体的糖苷化方面效果良好。大多数反应在仅 35% 的绿色光稳定 Bi(OTf) 3催化剂存在下在 1 小时内完成。
• S-Thiazolinyl (STaz) Glycosides as Versatile Building Blocks for Convergent Selective, Chemoselective, and Orthogonal Oligosaccharide Synthesis
  作者：Papapida Pornsuriyasak、Alexei V. Demchenko

  DOI：10.1002/chem.200600262

  日期：2006.8.25

  In the aim of developing new procedures for efficient oligosaccharide assembly, a range of S-thiazolinyl (STaz) glycosides have been synthesized. These novel derivatives were evaluated against a variety of reaction conditions and were shown to be capable of being chemoselectively activated in the armed-disarmed fashion. Moreover, the S-thiazolinyl moiety exhibited a remarkable propensity for selective

  为了开发有效寡糖组装的新方法，已合成了一系列S-噻唑啉基（STaz）糖苷。这些新颖的衍生物针对各种反应条件进行了评估，并显示出能够以武装-解除武装的方式进行化学选择性活化。此外，与其他常见的离去基团相比，S-噻唑啉基部分显示出显着的选择性活化倾向。相反，可以在STaz部分上选择性激活各种离去基团，从而允许STaz / S-乙基和STaz / S-苯基正交方法。为了证明新型STaz衍生物的多功能性，已经以收敛的选择性，正交和化学选择性方式合成了许多寡糖靶标。
• A Highly Efficient Glycosidation of Glycosyl Chlorides by Using Cooperative Silver(I) Oxide–Triflic Acid Catalysis
  作者：Scott A. Geringer、Yashapal Singh、Daniel J. Hoard、Alexei V. Demchenko

  DOI：10.1002/chem.201905576

  日期：2020.6.26

  Following our discovery that silver(I) oxide‐promoted glycosylation with glycosyl bromides can be greatly accelerated in the presence of catalytic TMSOTf or TfOH, we report herein a new discovery that glycosyl chlorides are even more effective glycosyl donors under these reaction conditions. The developed reaction conditions work well with a variety of glycosyl chlorides. Both benzoylated and benzylated

  我们发现在催化TMSOTf或TfOH的存在下，氧化银（I）促进的糖基溴化物的糖基化作用可以大大加速，我们在此报告了一个新发现，即在这些反应条件下糖基氯化物是更有效的糖基供体。发达的反应条件适用于各种糖基氯化物。苯甲酰化氯和苄基化氯化物均已成功糖基化，这些反应条件被证明对偶联含有氮和硫原子的底物有效。这种糖基化的另一个便利特征是可以直观地监测反应的进程。它的完成可以通过Ag 2 O特有的深色消失来判断。
• Investigation of Glycosyl Nitrates as Building Blocks for Chemical Glycosylation
  作者：Tinghua Wang、Yashapal Singh、Keith J. Stine、Alexei V. Demchenko

  DOI：10.1002/ejoc.201801272

  日期：2018.12.19

  Glycosyl nitrates are important synthetic intermediates in the synthesis of 2-amino sugars, 1,2-orthoesters or, more recently, 2-OH glucose. However, glycosyl nitrates have never been glycosidated. Presented herein is our first attempt to use glycosyl nitrates as glycosyl donors for O-glycosylation. Lanthanide triflates showed good affinity to activate the nitrate leaving group.

  硝酸糖基是合成 2-氨基糖、1,2-原酸酯或最近的 2-OH 葡萄糖的重要合成中间体。然而，硝酸糖基从未被糖苷化。本文介绍的是我们首次尝试使用硝酸糖基作为 O-糖基化的糖基供体。镧系三氟甲磺酸盐对激活硝酸盐离去基团显示出良好的亲和力。
• 2-Allylphenyl glycosides as complementary building blocks for oligosaccharide and glycoconjugate synthesis
  作者：Hemali D Premathilake、Alexei V Demchenko

  DOI：10.3762/bjoc.8.66

  日期：——

  The O-allylphenyl (AP) anomeric moiety was investigated as a new leaving group that can be activated for chemical glycosylation under a variety of conditions, through both direct and remote pathways. Differentiation between the two activation pathways was achieved in a mechanistic study. The orthogonal-type activation of the AP moiety along with common thioglycosides allows for the execution of efficient

  O-烯丙基苯基 (AP) 异头部分被研究为一种新的离去基团，可以在各种条件下通过直接和远程途径激活化学糖基化。在机械研究中实现了两种激活途径之间的区别。AP 部分的正交型激活与常见的硫糖苷一起允许执行有效的寡糖组装。