Hepta-O-acetyl-gentiobiosyl bromide | 71963-74-1

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: Hepta-O-acetyl-gentiobiosyl bromide
• CAS: 71963-74-1
• 化学式: C₂₆H₃₅BrO₁₇
• 分子量: 699.458
• InChiKey: QLNKYWGJSVLWHY-XDSCNRSSSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  0.0
• 重原子数：
  44.0
• 可旋转键数：
  11.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  211.79
• 氢给体数：
  0.0
• 氢受体数：
  17.0

反应信息

• 作为反应物：
  描述：

  Hepta-O-acetyl-gentiobiosyl bromide 在 氢氧化钾 、 silver carbonate 作用下， 反应 2.0h， 生成 2-methoxyethyl O-(2,3,4,6-tetra-O-benzyl-β-D-glucopyranosyl)-(1<*>6)-2,3,4-tri-O-benzyl-β-D-glucopyranoside
  参考文献：
  名称：

  使用葡萄糖二糖和乳糖的七苄基衍生物进行脱水糖基化

  摘要：

  D-吡喃葡萄糖的 2-、3-、4-和 6-OH 基团与葡萄糖二糖的七-O-苄基衍生物的脱水糖基化（OD-吡喃葡萄糖基-（1→n）-D-吡喃葡萄糖；n = 2， 3、4 或 6) 和乳糖，在对硝基苯磺酰氯、三氟甲磺酸银和三乙胺的三元混合物在二氯甲烷中的存在下表明反应的选择性取决于异头构型和与还原三苄基葡萄糖的连接位置非还原性四苄基葡萄糖残基的部分和要糖基化的 OH 基团的类别。使用对硝基苯磺酰氯、三氟甲磺酸银、N,N-二甲基乙酰胺和三乙胺的四元混合物使除 β(1→2)-连接的生物基供体以外的所有物质都发生 α-缩合。

  DOI：

  10.1246/bcsj.65.3257
• 作为产物：
  描述：

  beta-龙胆二糖八乙酸酯 在 乙酰溴 、 水 作用下， 以 氯仿 为溶剂， 反应 1.0h， 生成 Hepta-O-acetyl-gentiobiosyl bromide
  参考文献：
  名称：

  使用葡萄糖二糖和乳糖的七苄基衍生物进行脱水糖基化

  摘要：

  D-吡喃葡萄糖的 2-、3-、4-和 6-OH 基团与葡萄糖二糖的七-O-苄基衍生物的脱水糖基化（OD-吡喃葡萄糖基-（1→n）-D-吡喃葡萄糖；n = 2， 3、4 或 6) 和乳糖，在对硝基苯磺酰氯、三氟甲磺酸银和三乙胺的三元混合物在二氯甲烷中的存在下表明反应的选择性取决于异头构型和与还原三苄基葡萄糖的连接位置非还原性四苄基葡萄糖残基的部分和要糖基化的 OH 基团的类别。使用对硝基苯磺酰氯、三氟甲磺酸银、N,N-二甲基乙酰胺和三乙胺的四元混合物使除 β(1→2)-连接的生物基供体以外的所有物质都发生 α-缩合。

  DOI：

  10.1246/bcsj.65.3257

文献信息

• Glycosides and Salts Thereof
  申请人：Kuszmann Janos

  公开号：US20080249165A1

  公开（公告）日：2008-10-09

  The invention relates to new polysulfated glycosides of formula (I), the salts thereof formed with alkali metals or alkaline-earth metals, 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.

  该发明涉及公式（I）的新多硫酸基糖苷，以及与碱金属或碱土金属形成的盐，以及含有这些化合物作为活性成分的药物组合物。此外，该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，包括哮喘和与哮喘相关的病理学。
• STEREOSELECTIVITY IN THE DEHYDRATIVE GLYCOSYLATION WITH HEPTA-<i>O</i>-BENZYL-GLUCOBIOSES
  作者：Naohiko Morishima、Shinkiti Koto、Terumi Irisawa、Yosuke Hashimoto、Masayo Yamazaki、Takashi Higuchi、Shonosuke Zen

  DOI：10.1246/cl.1982.1383

  日期：1982.9.5

  Dehydrative glycosylation of benzyl 2,3,4-tri-O-benzyl-α-d-glucopyranoside with hepta-O-benzyl-kojibiose, -sophorose, -nigerose, -laminaribiose, -maltose, -cellobiose, -isomaltose, and -gentiobiose gave 16 linear trisaccharide derivatives. The reaction of α(1→2)-, β(1→3)-, α(1→4)- and β(1→6) -linked biose derivatives shows the α-selectivity, while the reaction of the others does the β-selectivity.

  苄基2,3,4-三-O-苄基-α-d-葡萄糖吡喃苷与七-O-苄基-高吉糖、-苏糖、-黑糖、-海藻糖、-麦芽糖、-纤维二糖、-异麦芽糖和-根苷的脱水糖苷化反应生成了16种线性三糖衍生物。α(1→2)、β(1→3)、α(1→4)和β(1→6)链接的二糖衍生物反应显示出α选择性，而其他衍生物则表现出β选择性。
• Mild Synthesis of Disaccharidic 2,3-Enopyranosyl Cyanides and 2-C-2-Deoxy Pyranosyl Cyanides with Hg(CN)₂/HgBr₂/TMSCN
  作者：Andreas H. Franz、YiQiu Wei、Vyacheslav V. Samoshin、Paul H. Gross

  DOI：10.1021/jo0111661

  日期：2002.11.1

  Lewis acid-catalyzed dimerization of mono- and disaccharidic per-O-acetylated glycals gave di- and tetrasaccharidic O-acetylated C-glycosides, respectively. 2,3-Enopyranosyl cyanides were obtained from per-O-acetylated glycals by a new, mild anomeric S-N'-acetoxy displacement with Hg(CN)(2)/HgBr2/TMSCN. Per-O-acetylated 2-C-2-deoxy-pyranoses were converted into pyranosyl cyanides by the same reagent. An unprecedented acetic acid elimination from dimers with D-galacto- and L-fuco-configurations accompanied the S-N-displacement under those conditions. A new set of H-1 NMR coupling constants for 2,3-enopyranosyl systems was used for configurational assignment of complicated tetrasaccharide mimics.
• Structure—activity relationships of synthetic methyl glycyrrhetate glycosides
  作者：Masayuki Takechi、Yasuo Tanaka

  DOI：10.1016/s0031-9422(00)95086-6

  日期：1993.3

  Of 15 synthetic methyl glycyrrhetate glycosides, the monoglycosides having CH2OH-6 or Me-6 in their sugar moieties and the diglycosides having a (1-->4) linkage between the sugar residues showed higher haemolytic activities than the others. The beta-maltoside and beta-lactoside exhibited much stronger antifungal activities against Trichophyton mentagrophytes than the others. However, none of them exhibited antibacterial activity against Staphylococcus aureus or Bacillus subtilis.
• Synthesis and antitumour activity of derivatives of curdlan and lichenan branched at C-6
  作者：Sabine Demleitner、Josef Kraus、Gerhard Franz

  DOI：10.1016/0008-6215(92)84071-y

  日期：1992.3

  Derivatives of curdlan and lichenan, linear (1 --> 3)-beta-D- and (1 --> 3/1 --> 4)-beta-D-glucans, respectively, have been synthesised having alpha-L-arabinofuranosyl, alpha-L-rhamnosyl, beta-D-glucosyl, and beta-gentiobiosyl side chains attached at positions 6. These water-soluble derivatives, obtained by condensation of the 2,4- and 2,4-/2,3-di-O-phenylcarbamoyl derivatives of curdlan and lichenan, respectively, with appropriate ortho esters followed by saponification, were characterised by methylation analysis, g.p.c., and interaction with Congo Red. The curdlan derivatives and the lichenan derivative with few glucosyl branches were active against the Sarcoma 180.