3-O-(β-D-glucopyranosyl)-D-glucitol | 499-16-1

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: 3-O-(β-D-glucopyranosyl)-D-glucitol
• 英文别名: 3-β-D-glucopyranosyl-D-glucitol；laminaribiitol；Lam-Glc2-ol；(2R,3R,4R,5S)-4-[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyhexane-1,2,3,5,6-pentol
• CAS: 499-16-1
• 化学式: C₁₂H₂₄O₁₁
• 分子量: 344.316
• InChiKey: VQHSOMBJVWLPSR-CRLSIFLLSA-N

物化性质

• 沸点：
  788.5±60.0 °C(Predicted)
• 密度：
  1.69±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  -5.2
• 重原子数：
  23
• 可旋转键数：
  8
• 环数：
  1.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  201
• 氢给体数：
  9
• 氢受体数：
  11

反应信息

• 作为反应物：
  描述：

  3-O-(β-D-glucopyranosyl)-D-glucitol 在 三氧化硫 N,N-二甲基甲酰胺络合物 、 sodium acetate 、 sodium hydroxide 作用下， 以 N,N-二甲基甲酰胺 、 甲醇 、 乙醇 、 水 为溶剂， 反应 1.0h， 以99%的产率得到1,2,4,5,6-penta-O-sulfato-3-O-(2,3,4,6-tetra-O-sulfato-β-D-glucopyranosyl)-D-glucitol nonasodium salt
  参考文献：
  名称：

  [EN] POLYSULFATED GLYCOSIDES AND SALTS THEREOF
  [FR] GLYCOSIDES POLYSULFATES ET SELS DE CEUX-CI

  摘要：

  公开号：

  WO2006017726A3
• 作为产物：
  描述：

  laminaribiose 在 sodium tetrahydroborate 作用下， 生成 3-O-(β-D-glucopyranosyl)-D-glucitol
  参考文献：
  名称：

  Co-ordinated synthesis of gentiobiitol and sorbitol, evidence of sorbitol glycosylation in transgenic sugarcane

  摘要：

  Sugarcane (a Saccharum spp. interspecific hybrid) was previously engineered to synthesize sorbitol (designated as sorbitolcane). Motivated by the atypical development of the leaves in some sorbitolcane, the polar metabolite profiles in the leaves of those plants were compared against a group of control sugarcane plants. Eighty-six polar metabolites were detected in leaf extracts by GC-MS. Principal component analysis of the metabolites indicated that three compounds were strongly associated with sorbitolcane. Two were identified as sorbitol and gentiobiose and the third was unknown. Gentiobiose and the unknown compound were positively correlated with sorbitol accumulation. The unknown compound was only abundant in sorbitolcane. This compound was structurally characterized and found to be a sorbitol-glucose conjugate. C-13 NMR analysis indicated that the glucopyranose and glucitol moieties were 1,6-linked. Ligand exchange chromatography confirmed that the compound was a beta-anomer, thus identifying the compound as 6-O-beta-D-glucopyranosyl-D-glucitol, or gentiobiitol. (C) 2010 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.phytochem.2010.01.014

文献信息

• Exploring novel non-Leloir β-glucosyltransferases from proteobacteria for modifying linear (β1→3)-linked gluco-oligosaccharide chains
  作者：Gudmundur O Hreggvidsson、Justyna M Dobruchowska、Olafur H Fridjonsson、Jon O Jonsson、Gerrit J Gerwig、Arnthor Aevarsson、Jakob K Kristjansson、Delphine Curti、Robert R Redgwell、Carl-Eric Hansen、Johannis P Kamerling、Takoua Debeche-Boukhit

  DOI：10.1093/glycob/cwq165

  日期：2011.3

  Over the years several β-glucan transferases from yeast and fungi have been reported, but enzymes with such an activity from bacteria have not been characterized so far. In this work, we describe the cloning and expression of genes encoding β-glucosyltransferase domains of glycosyl hydrolase family GH17 from three species of proteobacteria: Pseudomonas aeruginosa PAO1, P. putida KT2440 and Azotobacter vinelandii ATCC BAA-1303. The encoded enzymes of these GH17 domains turned out to have a non-Leloir trans-β-glucosylation activity, as they do not use activated nucleotide sugar as donor, but transfer a glycosyl group from a β-glucan donor to a β-glucan acceptor. More particularly, the activity of the three recombinant enzymes on linear (β1 → 3)-linked gluco-oligosaccharides (Lam-Glc4–9) and their corresponding alditols (Lam-Glc4–9-ol) was studied. Detailed structural analysis, based on thin-layer chromatography, matrix-assisted laser desorption ionization time-of-flight mass spectrometry, electrospray ionization mass spectrometry, and 1D/2D 1H and 13C nuclear magnetic resonance data, revealed diverse product spectra. Depending on the enzyme used, besides (β1 → 3)-elongation activity, (β1 → 4)- or (β1 → 6)-elongation, or (β1 → 6)-branching activities were also detected.

  多年来，酵母和真菌中的β-葡聚糖转移酶已被报道，但细菌中具有这种活性的酶迄今尚未被鉴定。在这项工作中，我们描述了三种蛋白细菌中编码糖基水解酶家族 GH17 β-葡聚糖转移酶结构域的基因的克隆和表达：铜绿假单胞菌（Pseudomonas aeruginosa PAO1）、腐生假单胞菌（P. putida KT2440）和乙烯绿氮菌（AzotoBActer vinelandii ATCC BAA-1303）。这些 GH17 结构域编码的酶具有非 Leloir 反式-β-葡萄糖基化活性，因为它们不使用活化的核苷酸糖作为供体，而是将一个糖基从β-葡聚糖供体转移到β-葡聚糖受体。更具体地说，研究了这三种重组酶对线性（β1 → 3）连接的葡聚寡糖（Lam-Glc4-9）及其相应的醛醇（Lam-Glc4-9-ol）的活性。基于薄层色谱法、基质辅助激光解吸电离飞行时间质谱法、电喷雾电离质谱法以及 1D/2D 1H 和 13C 核磁共振数据的详细结构分析揭示了不同的产物光谱。根据所用酶的不同，除了（β1 → 3）-伸长活性外，还检测到（β1 → 4）-或（β1 → 6）-伸长或（β1 → 6）-分支活性。
• POLYSULFATED GLYCOSIDES AND SALTS THEREOF
  申请人：Kuszmann János

  公开号：US20110118198A1

  公开（公告）日：2011-05-19

  The invention relates to polysulfated glycosides of formula (I), the pharmaceutically acceptable salts thereof, as well as the pharmaceutical compositions containing these compounds as active ingredients. Furthermore the invention provides a method of preventing, treating or alleviating the symptoms of acute and chronic inflammatory disorders of the airways of mammals—including asthma and asthma-related pathologies.

  本发明涉及公式（I）的多硫酸化糖苷，其药学上可接受的盐，以及包含这些化合物作为活性成分的制药组合物。此外，本发明提供了一种预防、治疗或缓解哺乳动物呼吸道急性和慢性炎症性疾病症状的方法，包括哮喘和哮喘相关病理。
• Two approaches to the synthesis of 3-β-d-glucopyranosyl-d-glucitol
  作者：János Kuszmann、Gábor Medgyes、Sándor Boros

  DOI：10.1016/j.carres.2004.07.019

  日期：2004.10

  Glycosidation of 1,2:5,6-di-O-isopropylidene-D-glucose with tetra-O-acetyl-glucosyl bromide in 1:1 benzene-MeNO2 afforded approximately equal amounts of the 3-O-beta-D-glycoside and the rearranged 6-O-beta-D-glycoside, while in MeCN only the latter was formed. When tetra-O-acetyl-beta-thiophenylgiucoside was used as donor in CH2Cl2 in the presence of NIS/TfOH as activator, the 6-O-beta-D-glycoside and a 3-O-orthoester were formed in a 1:2 ratio at -20 degreesC, while at 20 degreesC only the former could be isolated. Glycosidation of 1-O-benzoyl-2,4-0-benzylidene-5,6-O-isopropylidene-D-glycutol with tetra-O-acetyl-glucosyl bromide in MeCN in the presence of Hg(CN)(2) afforded the corresponding 3-O-alpha- and 3-O-beta-glycopyranoside in a 1:4 ratio in MeCN and 1:5 in 1:1 benzene-MeNO2. respectively. When Hg(CN)(2)/HgBr2 was used as promoter, the corresponding orthoester was also formed. When tetra-O-acetyl-beta-thiophenylglucoside was used as donor, the 3-O-beta-anomer and the orthoester were obtained predominantly in a 3:2 ratio together with traces of the 3-O-alpha-glycoside. Both beta-glycosides could be smoothly converted into 3-beta-D-glucopyranosyl-D-glucitol (C) 2004 Elsevier Ltd. All rights reserved.
• One-Step Conversion of Cellobiose to C₆-Alcohols Using a Ruthenium Nanocluster Catalyst
  作者：Ning Yan、Chen Zhao、Chen Luo、Paul J. Dyson、Haichao Liu、Yuan Kou

  DOI：10.1021/ja062468t

  日期：2006.7.1

  The one-step conversion of cellulose to C6-alcohols via green and energy efficient approaches has, as far as we are aware, not been reported. Such a process presents a considerable challenge, the two key problems being (1) finding a suitable solvent that dissolves the cellulose, and (2) the development of advanced catalytic chemistry for selective cleavage of the C-O-C bonds (glycosidic bonds) connecting glucose residues. The dissolution of cellulose has been recently realized by using ionic liquids as green solvents; there is still no efficient method, such as selective hydrogenation, for the precise C-O-C cleavage under mild conditions, however. Cellobiose is a glucose dimer connected by a glycosidic bond and represents the simplest model molecule for cellulose. We disclose in this communication that the one-step conversion of cellobiose to C6-alcohols can be realized by selectively breaking the C-O-C bonds via selective hydrogenation using a water-soluble ruthenium nanocluster catalyst under 40 bar H2 pressure.
• SEQUENTIAL REMOVAL OF MONOSACCHARIDES FROM THE REDUCING END OF OLIGOSACCHARIDES AND USES THEREOF
  申请人：The Biomembrane Institute

  公开号：EP0649427A1

  公开（公告）日：1995-04-26

表征谱图