1,4,5,6-tetra-O-acetyl-2,3-di-O-methylgalactitol | 25521-23-7

• 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: 1,4,5,6-tetra-O-acetyl-2,3-di-O-methylgalactitol
• 英文别名: [(2S,3R,4S,5R)-4,5,6-triacetyloxy-2,3-dimethoxyhexyl] acetate
• CAS: 25521-23-7
• 化学式: C₁₆H₂₆O₁₀
• 分子量: 378.376
• InChiKey: UUPZYXOWVJCPJT-JJXSEGSLSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -0.2
• 重原子数：
  26
• 可旋转键数：
  15
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.75
• 拓扑面积：
  124
• 氢给体数：
  0
• 氢受体数：
  10

反应信息

• 作为产物：
  描述：

  对硝基苯-α-D-葡萄糖吡喃苷 生成 1,4,5,6-tetra-O-acetyl-2,3-di-O-methylgalactitol
  参考文献：
  名称：

  SHEA, ELAINE M.;CARPITA, NICHOLAS C., J. CHROMATOGR., 445,(1988) N 2, 424-428

  摘要：

  DOI：

文献信息

• A facile method for the synthesis of partially O-methylated alditol acetate standards for GC–MS analysis of galactofuranose-containing structures
  作者：Jian-yu He、Yu-na Guo、Ling-ling Zhang、Lin-hong Huang

  DOI：10.1016/j.carres.2013.06.005

  日期：2013.9

  Mixtures of partially O-methylated alditol acetate standards of galactofuranose were synthesized rapidly. Methyl galactofuranosides were obtained with a yield of 79.9% within 4h under optimized reaction conditions. Methylation of methyl glycosides was carried out in the presence of BaO/Ba(OH)2·8H2O, giving rise to mixtures of partially methylated glycosides. The batch containing the most diverse structures

  快速合成了半乳糖呋喃糖的部分O-甲基化糖醇乙酸酯标准品的混合物。在优化的反应条件下，在4h内获得甲基半乳糖呋喃糖苷的收率为79.9％。在BaO / Ba（OH）2·8H2O的存在下进行甲基糖苷的甲基化，生成部分甲基化糖苷的混合物。将包含最多样化甲基醚结构的批料转化为部分O-甲基化的糖醇乙酸酯（PMAAs），然后进行GC-MS分析。这些PMAA可用作GC-MS标准品，用于同时鉴定在复杂碳水化合物中具有不同键的半乳糖呋喃糖单元。
• ANTI-ALLERGIC AGENT
  申请人：Morishita Jintan Co., Ltd.

  公开号：EP2551283A1

  公开（公告）日：2013-01-30

  According to the present invention, an anti-allergic agent is provided which includes a polysaccharide comprising galactose, glucose and rhamnose as constituents, or includes a microorganism belonging to the genus Bifidobacterium and extracellularly producing the polysaccharide. The anti-allergic agent of the present invention can be used in oral compositions and compositions for external application, and is suitable for use in products such as food products, pharmaceutical products, and cosmetics.

  根据本发明，提供了一种抗过敏剂，它包括一种以半乳糖、葡萄糖和鼠李糖为成分的多糖，或包括一种属于双歧杆菌属并在细胞外产生该多糖的微生物。本发明的抗过敏剂可用于口服组合物和外用组合物，并适用于食品、药品和化妆品等产品。
• The structural elucidation of the capsular polysaccharide of Klebsiella K68
  作者：Guy G.S. Dutton、Haralambos Parolis、Lesley S. Parolis

  DOI：10.1016/s0008-6215(00)90305-7

  日期：1986.9

  The structure of the capsular polysaccharide isolated from Klebsiella K68 bacteria has been elucidated by both chemical and spectroscopic methods. The structure is of the "3 + 1" type, similar in pattern to the structures of the polysaccharides of Klebsiella K11 and K57, having a single branch point on the uronic acid. The polysaccharide is shown to consist of the following repeating unit: (Formula: see text).
• POLYSACCHARIDE PRODUCED BY MICROORGANISM BELONGING TO GENUS BIFIDOBACTERIUM
  申请人：Morishita Jintan Co., Ltd.

  公开号：EP1908819B1

  公开（公告）日：2016-10-12
• Polysaccharide Produced by Microorganism Belonging to Genus Bifidobacterium
  申请人：Asada Masanori

  公开号：US20100174063A1

  公开（公告）日：2010-07-08

  A polysaccharide comprising galactose, glucose, rhamnose, and pyruvic acid as constituents, wherein the galactose, glucose, and rhamnose are contained in a molar ratio of 4:2:1, and the pyruvic acid is contained in an amount of 4 to 7 wt %. The polysaccharide can be obtained by culturing Bifidobacterium longum JBL05 (NITE BP-82) under anaerobic conditions.