(2S,4S,5R,6R)-5-Amino-4-hydroxy-2-p-tolylsulfanyl-6-((1R,2R)-1,2,3-trihydroxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester | 374573-40-7

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: (2S,4S,5R,6R)-5-Amino-4-hydroxy-2-p-tolylsulfanyl-6-((1R,2R)-1,2,3-trihydroxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester
• 英文别名: methyl (2S,4S,5R,6R)-5-amino-4-hydroxy-2-(4-methylphenyl)sulfanyl-6-[(1R,2R)-1,2,3-trihydroxypropyl]oxane-2-carboxylate
• CAS: 374573-40-7
• 化学式: C₁₇H₂₅NO₇S
• 分子量: 387.454
• InChiKey: QBWYSMJHBROWHT-CXECBNLGSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.1
• 重原子数：
  26
• 可旋转键数：
  7
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.59
• 拓扑面积：
  168
• 氢给体数：
  5
• 氢受体数：
  9

反应信息

• 作为反应物：
  描述：

  (2S,4S,5R,6R)-5-Amino-4-hydroxy-2-p-tolylsulfanyl-6-((1R,2R)-1,2,3-trihydroxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester 在 吡啶 、 乙酸酐 、 碳酸氢钠 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 、 水 、 乙腈 为溶剂， 生成 methyl (3aR,4R,6S,7aS)-3-acetyl-6-(4-methylphenyl)sulfanyl-2-oxo-4-[(1S,2R)-1,2,3-triacetyloxypropyl]-3a,4,7,7a-tetrahydropyrano[3,4-d][1,3]oxazole-6-carboxylate
  参考文献：
  名称：

  Comparative studies on the O-sialylation with four different α/β-oriented (N-acetyl)-5-N,4-O-carbonyl-protected p-toluenethiosialosides as donors

  摘要：

  Four types of 5-N,4-O-carbonyl-protected p-toluenethiosialosides were synthesized and their couplings with different acceptors were thoroughly investigated. The results indicate that the sialyl donor structure, the amount of glycosyl acceptor, and the detailed promotion conditions have great influence on the sialylation stereoselectivties and product yields. Under the (p-Tol)(2)SO/Tf2O activation conditions, the glycosylations with simple alcohols provided declined alpha-selectivities and higher yields with increasing the amounts of acceptors from 1.1 equiv to 2.0 equiv. However, the outcome of same sialylation was independent of the relative amounts of sugar alcohol acceptors. With NIS/TfOH as promoter, the alpha-selectivities of the sialylations were significantly improved compared with the cases activated by (p-Tol)(2)SO/Tf2O. In general, the difference in configuration of N-acetylated sialyl donors (D2 and D4) has little effect on the sialylation yield and stereoselectivity. In contrast, the N-deacetylated alpha/beta sialyl donors (D1 and D3) show complex sialylation profiles with different acceptors. (C) 2014 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2014.02.006
• 作为产物：
  描述：

  N-acetyl neuraminic acid 在 吡啶 、 盐酸 、 甲醇 、 4-二甲氨基吡啶 、 甲烷磺酸 、 N,N-二异丙基乙胺 、 乙酰氯 作用下， 以 二氯甲烷 为溶剂， 反应 82.5h， 生成 (2S,4S,5R,6R)-5-Amino-4-hydroxy-2-p-tolylsulfanyl-6-((1R,2R)-1,2,3-trihydroxy-propyl)-tetrahydro-pyran-2-carboxylic acid methyl ester
  参考文献：
  名称：

  [EN] NOVEL NEISSERIA MENINGITIDIS SEROGROUP Y OLIGOMER AND PROCESS FOR SYNTHESIZING THEREOF
  [FR] NOUVEL OLIGOMÈRE DE NEISSERIA MENINGITIDIS DE SÉROGROUPE Y ET PROCÉDÉ DE SYNTHÈSE DE CELUI-CI

  摘要：

  本发明涉及新型脑膜炎球菌Y群胶囊多糖重复单元（Men-Y寡聚体）及合成新型Men-Y寡聚体的方法。具体而言，本发明涉及Men-Y胶囊多糖重复单元四聚体的化学合成，可用作开发半合成或全合成结合疫苗，用于预防脑膜炎球菌Y群细菌感染的候选物。

  公开号：

  WO2017017509A1

文献信息

• An efficient approach for total synthesis of aminopropyl functionalized ganglioside GM1b
  作者：Bin Sun、Heyan Jiang

  DOI：10.1016/j.tetlet.2012.08.077

  日期：2012.10

  A highly efficient protocol for the synthesis of aminopropyl functionalized ganglioside GM1b has been described. The full protected ganglioside GM1b was obtained in 71% yield within 5 h. The key feature of the synthetic approach was the use of sialic acid donor that was with a C-5 trichloroacetamide moiety and with a dibenzyl phosphite residue as leaving group at the anomeric carbon. The sialyl donor

  已经描述了用于合成氨丙基官能化神经节苷脂GM1b的高效方案。在5小时内以71％的产率获得了完全保护的神经节苷脂GM1b。合成方法的关键特征是使用唾液酸供体，其具有C-5三氯乙酰胺部分和亚磷酸二苄酯残基作为异头碳上的离去基团。通过在乙腈和乙腈的混合溶液中使用TMSOTf作为催化剂，唾液酸供体可提供高收率和出色的α-端异构选择性，具有多种糖基受体，范围从半乳糖苷的C-3或C-6羟基到葡糖氨基糖苷的C-6羟基。二氯甲烷。
• Chemoselective per-O-trimethylsilylation and homogeneous N-functionalisation of amino sugars
  作者：A. Abragam Joseph、Vijay M. Dhurandhare、Chun-Wei Chang、Ved Prakash Verma、Girija Prasad Mishra、Chiao-Chu Ku、Chun-Cheng Lin、Cheng-Chung Wang

  DOI：10.1039/c4cc06645f

  日期：——

  HomogeneousN-functionalisation of amino sugars can be achievedviaefficient CH₃CN-promoted hexamethyldisilazane per-O-trimethylsilylation.

  氨基糖的均相N-官能化可以通过高效的CH3CN促进的六甲基二硅氮烷经过O-三甲基硅基化实现。
• α-Selective Sialylations with N-Acetyl-5-N,4-O-Oxazolidinone-Protected p-Toluenethiosialoside
  作者：Guo-wen Xing、Fen-fen Liang、Li Chen

  DOI：10.1055/s-0028-1087539

  日期：2009.2

  A novel N-acetyl-5-N,4-O-oxazolidinone-protected p-toluenethiosialoside was readily prepared from sialic acid and p-toluenethiol. It was demonstrated that the p-toluenethiosialoside could be successfully applied to the α-selective sialylations with various glycosyl acceptors in good yields. In the coupling of N-acetyl-5-N,4-O-oxazolidinone-protected p-toluenethiosialoside and gluco alcohol, a quantitative reaction yield and high α-selectivity were obtained in dichloromethane-acetonitrile (2:1) at -40 ˚C.

  一种新型的N-乙酰-5-N,4-O-氧杂环丁烷酮保护的对甲苯硫糖苷可以方便地由唾液酸和对甲苯硫醇制备。研究表明，该对甲苯硫糖苷可以成功用于与各种糖苷受体的α-选择性唾液酸化反应，且产率良好。在N-乙酰-5-N,4-O-氧杂环丁烷酮保护的对甲苯硫糖苷与葡萄糖醇的偶联反应中，在-40°C的二氯甲烷-乙腈（2:1）中获得了定量的反应产率和高α-选择性。
• Phosphite-based sialic acid donors in the synthesis of α(2→9) oligosialic acids
  作者：Chang-Ching Lin、Avijit Kumar Adak、Jia-Cherng Horng、Chun-Cheng Lin

  DOI：10.1016/j.tet.2009.04.022

  日期：2009.6

  The combination of a phosphite donor and an anomeric thiocresol-protected acceptor, both with a TFA protecting group at C-5 of the sialic acid, provides good α-selectivity and yield in sialylation. Although the convergent synthetic strategy of using a phosphite disialo-donor and a disialo-acceptor assembles tetra-sialic acid efficiently, overcoming the low α-selectivity of α-anomer and purifying it

  亚磷酸酯供体和异头硫醇甲酚保护的受体的组合，在唾液酸的C-5处均具有TFA保护基，在唾液酸化中提供了良好的α-选择性和产率。尽管使用亚磷酸酯二唾液酸供体和二唾液酸受体的会聚合成策略有效地组装了四唾液酸，但是仍然需要克服α-端基异构体的低α-选择性并对其进行纯化。此外，将单唾液酸和二唾液酸分别缀合在载体蛋白，匙孔血蓝蛋白上。建议使用酶水解方法估算蛋白质偶联物上唾液酸的量。
• The Thioglycoside and Glycosyl Phosphite of 5-Azido Sialic Acid: Excellent Donors for theα-Glycosylation of Primary Hydroxy Groups
  作者：Chung-Shan Yu、Kenichi Niikura、Chun-Cheng Lin、Chi-Huey Wong

  DOI：10.1002/1521-3773(20010803)40:15<2900::aid-anie2900>3.0.co;2-4

  日期：2001.8.3

  5-Azido sialyl donors with O-acetyl protecting groups are useful α-selective glycosylation reagents, especially for primary hydroxyl groups as acceptors. This is shown with a variety of reactions using 1 as a sialyl donor. It was also possible to synthesize NeuAcα(2→9)NeuAc as a thioglycoside donor for use in subsequent glycosylations.