(2',3',4'-tri-O-benzyl-α-L-fucopyranosyl)-(1→6)-methyl-2,3,4-tri-O-benzyl-α-D-glucopyranoside | 137063-47-9

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2',3',4'-tri-O-benzyl-α-L-fucopyranosyl)-(1→6)-methyl-2,3,4-tri-O-benzyl-α-D-glucopyranoside
• 英文别名: methyl (2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-β-L-fucopyranosyl-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-6-O-(2,3,4-tri-O-benzyl-α-L-fucopyranosyl)-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-6-O-(2,3,4-tri-O-benzyl-β-L-fucopyranosyl)-α-D-glucopyranoside；methyl 2,3,4-tri-O-benzyl-L-fucopyranosyl-(1->6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside；(2S,3R,4S,5R,6R)-3,4,5-tris(benzyloxy)-2-methoxy-6-((((2R,3S,4R,5R,6S)-3,4,5-tris(benzyloxy)-6-methyltetrahydro-2H-pyran-2-yl)oxy)methyl)tetrahydro-2H-pyran；(2S,3R,4S,5R,6R)-2-methoxy-6-[[(2R,3S,4R,5R,6S)-6-methyl-3,4,5-tris(phenylmethoxy)oxan-2-yl]oxymethyl]-3,4,5-tris(phenylmethoxy)oxane
• CAS: 137063-47-9
• 化学式: C₅₅H₆₀O₁₀
• 分子量: 881.075
• InChiKey: OZAWEQPEXYIULG-HYQKDOBOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.5
• 重原子数：
  65
• 可旋转键数：
  22
• 环数：
  8.0
• sp3杂化的碳原子比例：
  0.35
• 拓扑面积：
  92.3
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为反应物：
  描述：

  (2',3',4'-tri-O-benzyl-α-L-fucopyranosyl)-(1→6)-methyl-2,3,4-tri-O-benzyl-α-D-glucopyranoside 在 palladium on activated charcoal 氢气 作用下， 以 溶剂黄146 为溶剂， 以80%的产率得到α-L-Fucp-(1<*>6)-α-D-GlcpOMe
  参考文献：
  名称：

  Baumann, Herbert; Jansson, Per-Erik; Kenne, Lennart, Journal of the Chemical Society. Perkin transactions I, 1991, # 9, p. 2229 - 2233

  摘要：

  DOI：
• 作为产物：
  描述：

  p-tolyl 2,3,4-tri-O-acetyl-1-thio-β-L-fucopyranoside 在 三氟甲磺酸酐 、 4,4'-二甲苯亚砜 、 sodium methylate 、 sodium hydride 作用下， 以 甲醇 、 二氯甲烷 、 N,N-二甲基甲酰胺 、 mineral oil 为溶剂， 反应 8.5h， 生成 (2',3',4'-tri-O-benzyl-α-L-fucopyranosyl)-(1→6)-methyl-2,3,4-tri-O-benzyl-α-D-glucopyranoside 、 methyl (2,3,4-tri-O-benzyl-β-L-fucopyranosyl)-(1→6)-2,3,4-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  A novel O -fucosylation strategy preactivated by ( p -Tol) 2 SO/Tf 2 O and its application for the synthesis of Lewis blood group antigen Lewis a

  摘要：

  Based on a preactivation strategy using (p-To1)(SO)-S-2/Tf2O, a new O-fucosylation method with thioglycoside as donor under mild conditions was reported. High yields and excellent alpha-stereoselectivities of the fucosylation were obtained with secondary sugar alcohol as acceptors. Moreover, the novel fucosylation strategy was successfully applied to the synthesis of an important Lewis blood group antigen Lewis(a), which was obtained in nine linear steps with 27% overall yield. (C) 2017 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.tetlet.2017.04.056

文献信息

• An Air- and Water-Stable Iodonium Salt Promoter for Facile Thioglycoside Activation
  作者：An-Hsiang Adam Chu、Andrei Minciunescu、Vittorio Montanari、Krishna Kumar、Clay S. Bennett

  DOI：10.1021/ol5004059

  日期：2014.3.21

  iodonium salt phenyl(trifluoroethyl)iodonium triflimide is shown to activate thioglycosides for glycosylation at room temperature. Both armed and disarmed thioglycosides rapidly undergo glycosylation in 68–97% yield. The reaction conditions are mild and do not require strict exclusion of air and moisture. The operational simplicity of the method should allow experimentalists with a limited synthetic background

  空气和水稳定的碘鎓盐苯基（三氟乙基）碘鎓三氟甲磺酰亚胺在室温下可激活硫代糖苷以进行糖基化。武装和解除武装的硫糖苷都以 68-97% 的产率迅速进行糖基化。反应条件温和，不需要严格排除空气和水分。该方法的操作简单性应该允许具有有限合成背景的实验者构建糖苷键。
• Glycosylation Reactions Using Phenyl(trifluoroethyl)iodonium Salts
  申请人：Trustees of Tufts College

  公开号：US20150099870A1

  公开（公告）日：2015-04-09

  Provided are methods for the preparation of glycosylation products, including those represented by formula I: Sugar-O—R′  I comprising the step of combining R′—OH, a glycosyl sulfide glycosyl donor (“thioglycoside donor”), a hypervalent iodine alkyl-transfer activating reagent, and a base. In an embodiment, the hypervalent iodine alkyl-transfer activating reagent is (phenyl(trifluoroethyl)iodonium triflimide).

  提供了制备糖基化产物的方法，包括由式I表示的那些： 糖-O—R′  I 包括将R′—OH、糖基硫醚糖基供体（“硫代糖苷供体”）、高价碘烷基转移活化试剂和碱结合的步骤。在一种实施例中，高价碘烷基转移活化试剂为（苯基(三氟乙基)碘三氟甲磺酰胺）。
• Dimethylformamide: An Unusual Glycosylation Modulator
  作者：Shao-Ru Lu、Yen-Hsun Lai、Jiun-Han Chen、Chih-Yueh Liu、Kwok-Kong Tony Mong

  DOI：10.1002/anie.201100076

  日期：2011.8.1

  A simple solution: When N,N‐dimethylformamide was used to direct the stereochemical course of glycosylation reactions, 1,2‐cis glycosylation products were formed with excellent selectivity. A straightforward highly α‐stereoselective glycosylation involving preactivation (see scheme) should find broad application and be especially useful for sequential glycosylation reactions to form oligosaccharides

  一个简单的解决方案：当使用N，N-二甲基甲酰胺指导糖基化反应的立体化学过程时，会形成1,2-顺式糖基化产物，选择性极好。涉及预激活的直接的高度α-立体选择性糖基化反应（请参见方案）应该得到广泛的应用，对于顺序糖基化反应形成寡糖特别有用。LG =离开小组。
• Glycosyl<i>ortho</i>-Methoxybenzoates: Catalytically Activated Glycosyl Donors with an Easily Removable and Recyclable Leaving Group
  作者：Steffan K. Kristensen、Stéphane Salamone、Michelle R. Rasmussen、Mikkel H. S. Marqvorsen、Henrik H. Jensen

  DOI：10.1002/ejoc.201600747

  日期：2016.11

  p-cyano-o-methoxybenzoate donors. In glycosylation reactions with o-methoxybenzoate donors, the yields of disaccharide products were good to excellent for various glycosyl acceptors, including a carbohydrate-based secondary alcohol. Furthermore, β-selective mannosylation was achieved with a Crich-type donor at 0 °C to ambient temperature, without donor preactivation. The donor was also used for the first

  我们将 β-邻甲氧基苯甲酸酯描述为一种用于催化化学糖基化的储存稳定且实用的 C-1 核离心剂，其中苯甲酸副产物可以很容易地去除、重新分离，并可能在糖基化反应后回收。这种新型糖基供体可以通过一系列促进剂有效活化，包括 Bi(OTf)3、Fe(OTf)3、TMSOTf（TMS = 三甲基甲硅烷基）和三氟甲磺酸，催化剂用量低（<10 mol-%）负荷。供体显示出比类似的苯甲酸盐、对甲氧基苯甲酸盐和对氰基-邻甲氧基苯甲酸盐供体更高的反应性。在与邻甲氧基苯甲酸酯供体的糖基化反应中，对于各种糖基受体（包括基于碳水化合物的仲醇），二糖产物的产率从好到极好。此外，β-选择性甘露糖基化是用 Crich 型供体在 0°C 至环境温度下实现的，无需供体预活化。供体也用于一锅两步糖基化的第一步，得到三糖；第二个偶联涉及用 NIS/TMSOTf（NIS = N-碘代琥珀酰亚胺）激活硫糖苷。我们相信这为当前协议提供了一个很好的替代方案。
• Bismuth(V)-Mediated Thioglycoside Activation
  作者：Manibarsha Goswami、Arkady Ellern、Nicola L. B. Pohl

  DOI：10.1002/anie.201304099

  日期：2013.8.5

  A straightforward method utilizing a bismuth(V) compound was developed for the activation of thiopropylglycosides for coupling to various acceptors; good to excellent yields were obtained without applying additional additives/co‐promoters. The method does not require low temperatures, is applicable to a wide variety of carbohydrates, and tolerates different functional groups including alkenes.

  开发了一种简单的利用铋（V）化合物的方法来激活硫丙基丙基糖苷以偶联到各种受体上。在不使用其他添加剂/助促进剂的情况下获得了良好至极好的收率。该方法不需要低温，适用于多种碳水化合物，并且可以耐受包括烯烃在内的不同官能团。