methyl 4-O-(3,4,6-tri-O-benzyl-2-deoxy-β-D-galactopyranosyl)-2,3,6-tri-O-benzyl-α-D-glucopyranoside | 125085-10-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: methyl 4-O-(3,4,6-tri-O-benzyl-2-deoxy-β-D-galactopyranosyl)-2,3,6-tri-O-benzyl-α-D-glucopyranoside
• 英文别名: (2S,3R,4S,5R,6R)-5-[(2S,4R,5R,6R)-4,5-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxan-2-yl]oxy-2-methoxy-3,4-bis(phenylmethoxy)-6-(phenylmethoxymethyl)oxane
• CAS: 125085-10-1
• 化学式: C₅₅H₆₀O₁₀
• 分子量: 881.075
• InChiKey: VYUQIENSEWOIHZ-PYNITRFASA-N

物化性质

• 沸点：
  895.7±65.0 °C(predicted)
• 密度：
  1.22±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  9.63
• 重原子数：
  65.0
• 可旋转键数：
  23.0
• 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：
  0.0
• 氢受体数：
  10.0

反应信息

• 作为产物：
  描述：

  2,3,5-三邻苄基-1-o-(4-硝基苯甲酰基)-d-阿拉伯呋喃糖 在 咪唑 、 三氟甲磺酸三甲基硅酯 、 4 A molecular sieve 、 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile 、 三正丁基氢锡 、 sodium 、 sodium hydride 作用下， 以 1,4-二氧六环 、 甲醇 、 甲苯 为溶剂， 反应 3.67h， 生成 methyl 4-O-(3,4,6-tri-O-benzyl-2-deoxy-β-D-galactopyranosyl)-2,3,6-tri-O-benzyl-α-D-glucopyranoside
  参考文献：
  名称：

  The synthesis of 2′-deoxy-β-disaccharides: Novel approaches

  摘要：

  DOI：

  10.1016/0008-6215(89)85044-x

文献信息

• A Stereocontrolled Construction of 2-Deoxy-β-glycosidic Linkages<i>via</i>1,2-<i>trans</i>-β-Glycosidation of 2-Deoxy-2-[(<i>p</i>-methoxyphenyl)thio] glycopyranosyl<i>N</i>,<i>N</i>,<i>N</i>′,<i>N</i>′-Tetramethylphosphoroamidates
  作者：Shun-ichi Hashimoto、Yuki Yanagiya、Takeshi Honda、Shiro Ikegami

  DOI：10.1246/cl.1992.1511

  日期：1992.8

  A stereocontrolled synthesis of 2-deoxy-β-glycosides has been achieved by developing a salient 1,2-trans-glycosidation method with 2-deoxy-2-[(p-methoxyphenyl)thio]glycopyranosyl N,N,N′,N′-tetramethylphosphoroamidates as glycosyl donors followed by a reductive removal of the p-methoxyphenylthio group with Raney nickel. The p-methoxyphenylthio group equatorially disposed at C-2 has proven to be an excellent stereodirecting auxiliary.

  通过开发一种显著的1,2-反式糖基化方法，使用2-脱氧-2-[(对甲氧基苯基)硫]吡喃糖基N,N,N',N'-四甲基膦酰胺作为糖基供体，随后用Raney镍还原去除对甲氧基苯硫基团，实现了2-脱氧-β-糖苷的立体控制合成。位于C-2位的对甲氧基苯硫基团在赤道位置上被证明是一个极佳的立体导向辅助基团。
• Iterative α-Glycosylation Strategy for 2-Deoxy- and 2,6-Dideoxysugars: Application to the One-Pot Synthesis of Deoxysugar-Containing Oligosaccharides
  作者：Jiun-Han Chen、Jyh-Herng Ruei、Kwok-Kong Tony Mong

  DOI：10.1002/ejoc.201400006

  日期：2014.3

  This paper describes the development of an iterative and α-selective glycosylation method for 2-deoxyglycosyl and 2,6-dideoxythioglycoside donors based on the DMF modulation concept. We used NMR spectroscopy to probe the 2-deoxyglycosyl imidinium intermediate and elucidated the conditions to decrease the formation of glycal and thus to increase the reaction yields. Further elaboration of the glycosylation

  本文描述了基于 DMF 调制概念的 2-脱氧糖基和 2,6-二脱氧硫糖苷供体的迭代和 α-选择性糖基化方法的开发。我们使用 NMR 光谱来探测 2-脱氧糖基亚胺鎓中间体，并阐明了减少糖醛形成从而提高反应产率的条件。糖基化方法的进一步阐述为含 2-脱氧和 2,6-双脱氧糖苷的低聚糖的迭代一锅法合成打开了大门。
• Automated Quantification of Hydroxyl Reactivities: Prediction of Glycosylation Reactions
  作者：Chun‐Wei Chang、Mei‐Huei Lin、Chieh‐Kai Chan、Kuan‐Yu Su、Chia‐Hui Wu、Wei‐Chih Lo、Sarah Lam、Yu‐Ting Cheng、Pin‐Hsuan Liao、Chi‐Huey Wong、Cheng‐Chung Wang

  DOI：10.1002/anie.202013909

  日期：2021.5.25

  (Aka) to quantify the nucleophilicity of hydroxyl groups in glycosylation influenced by the steric, electronic and structural effects, providing a connection between experiments and computer algorithms. The subtle reactivity differences among the hydroxyl groups on various carbohydrate molecules can be defined by Aka, which is easily accessible by a simple and convenient automation system to assure

  糖基化反应的立体选择性和产率至关重要，但不可预测。我们已经开发了一个亲核亲核常数（Aka）数据库，用于量化受空间，电子和结构效应影响的糖基化中羟基的亲核性，从而在实验和计算机算法之间建立联系。各种碳水化合物分子上的羟基之间的细微反应性差异可以由Aka定义，Aka可以通过简单便捷的自动化系统轻松访问，以确保高重现性和准确性。通过设计的软件程序“ GlycoComputer”可以组织和处理各种具有明确反应性和启动子的糖基化供体和受体，从而无需复杂的计算过程即可预测糖基化反应。通过随机森林算法进一步验证了Aka的重要性，并通过合成Lewis A骨架测试了适用性，表明可以准确估计立体选择性和产率。
• L‐Proline Derived Thioamide Small Organic Molecule for the α‐Stereoselective Synthesis of 2‐Deoxyglycosides
  作者：Ashwani Tiwari、Ariza Khanam、Ashwani Kumar、Mohan Lal、Pintu Kumar Mandal

  DOI：10.1002/adsc.202300455

  日期：2023.9.5

  catalyzes direct stereoselective glycosylation of glycal donors to access 2-deoxyglycosides under moderate reaction conditions. This proposed glycosylation protocol produced the desired products in up to 88% yield and shows greater tolerance of glycosyl acceptors and a broad substrate scope with better stereoselectivity. This method is also applicable for less nucleophilic acceptors such as phenol.

  L-脯氨酸硫代酰胺在温和的反应条件下催化糖供体的直接立体选择性糖基化以形成 2-脱氧糖苷。该提议的糖基化方案以高达 88% 的产率产生了所需的产物，并显示出更大的糖基受体耐受性和更广泛的底物范围以及更好的立体选择性。该方法也适用于亲核性较低的受体，例如苯酚。此外，还可以通过该方法获得1,1'-连接的海藻糖型类似物。此外，机理研究表明，在这种糖基化中，L-脯氨酸硫酰胺通过布朗斯台德酸/碱催化起作用。
• Stereoselective glycosylation of endo-glycals by microwave- and AlCl3-assisted catalysis
  作者：Hui-Chang Lin、Jia-Fu Pan、Yen-Bo Chen、Zi-Ping Lin、Chun-Hung Lin

  DOI：10.1016/j.tet.2011.05.124

  日期：2011.8

  alpha-2-Deoxyglycosides were synthesized in good to excellent yields by microwave-assisted reaction of endo-glycals with various O-nucleophiles in the presence of catalytic amount of AlCl3. These glycosyl additions occurred with high alpha-stereoselectivity and were complete in 5-35 min in 65-93% yield. (C) 2011 Elsevier Ltd. All rights reserved.