Methyl 2,4-di-O-benzoyl-3,6-dideoxy-α-D-arabino-hexopyranoside | 32476-35-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: Methyl 2,4-di-O-benzoyl-3,6-dideoxy-α-D-arabino-hexopyranoside
• CAS: 32476-35-0
• 化学式: C₂₁H₂₂O₆
• 分子量: 370.402
• InChiKey: FGWRYTIZCQELSB-SIHWBGBFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  3.22
• 重原子数：
  27.0
• 可旋转键数：
  5.0
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.33
• 拓扑面积：
  71.06
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  Methyl 2,4-di-O-benzoyl-3,6-dideoxy-α-D-arabino-hexopyranoside 在 silver trifluoromethanesulfonate 、 1,1,3,3-四甲基脲 、 zinc(II) chloride 作用下， 以 二氯甲烷 为溶剂， 反应 2.0h， 生成 8-methoxycarbonyloctyl 4,6-O-cyclohexylidene-3-O-(2,4-di-O-benzoyl-3,6-dideoxy-α-D-arabino-hexopyranosyl)-2-O-(tetra-O-benzyl-α-D-galactopyranosyl)-α-D-mannopyranoside
  参考文献：
  名称：

  Antigenic determinants of Salmonella serogroups A and D1.Synthesis of trisaccharide glycosides for use as artificial antigens

  摘要：

  The disaccharide glycoside 8-methoxycarbonyloctyl 4,6-O-cyclohexylidine-2-O-(tetra-O-benzyl-alpha-D-galactopyranosyl)-alpha-D-manno pyranoside (7) was used as a common intermediate to the trisaccharide determinants of both Salmonella serogroups A and D1. Acetalation of 8-methoxycarbonyloctyl alpha-D-mannopyranoside provided the 4,6-acetal derivative, which was selectively benzoylated to give the partially protected mannoside 4. Reaction of 4 with tetra-O-benzyl-alpha-D-galacto-pyranosyl chloride afforded the fully protected disaccharide, which, after transesterification, gave the selectively blocked, disaccharide glycoside (7). Addition of tyvelose by way of its 2,4-di-O-benzoyl-3,6-dideoxy-alpha-D-arabino-hexopyranosyl chloride derivative gave the blocked trisacchride determinant of Salmonella serogroup D1. 2,4,-Di-O-benzyl-3,6-dideoxy-alpha-D-ribo-hexopyranosyl chloride reacted with 7 to provide, after removal of blocking groups, the paratose-containing determinant of serogroup A.

  DOI：

  10.1016/s0008-6215(82)80005-0
• 作为产物：
  描述：

  methyl 2,4-di-O-benzoyl-3,6-di-O-(imidazol-1-ylthiocarbonyl)-α-D-mannopyranoside 在 三正丁基氢锡 、 1,1'-偶氮(氰基环己烷) 作用下， 以 甲苯 为溶剂， 生成 Methyl 2,4-di-O-benzoyl-3,6-dideoxy-α-D-arabino-hexopyranoside
  参考文献：
  名称：

  Synthesis of threeSalmonellaepitopes for biosensor studies of carbohydrate–antibody interactions

  摘要：

  1-3号二糖对应沙门氏菌血清型A、B和D的抗原决定因子，已经合成成适合在生物传感器中使用的形式。这些二糖决定因子每个都包含一种独特的3,6-二去氧己糖，即阿贝酮（3,6-二去氧-D-木糖己糖）、帕拉糖（3,6-二去氧-D-核糖己糖）和蒂维糖（3,6-二去氧-D-阿拉伯糖己糖），它们与D-甘露糖的3位α键合。这些二糖进一步与具有末端氨基基团的线性糖苷基团衍生物化，可以轻松地与携带末端硫醇的相关链耦合，用于构建自组装单分子膜（SAMs）。已开发了采用单一3,6-二去氧化步骤的高效合成帕拉糖苷15和蒂维糖苷22的路线。关键词：沙门氏菌O抗原、脂多糖、阿贝酮、帕拉糖、蒂维糖、3,6-二去氧己糖、去氧化、糖苷连接物、通过戊烯基糖苷固定。

  DOI：

  10.1139/v02-121

文献信息

• Deoxygenation of carbohydrates by thiol-catalysed radical-chain redox rearrangement of the derived benzylidene acetals
  作者：Hai-Shan Dang、Brian P. Roberts、Jasmeet Sekhon、Teika M. Smits

  DOI：10.1039/b212303g

  日期：2003.4.14

  efficient thiol-catalysed radical-chain redox rearrangement resulting in deoxygenation at one of the diol termini and formation of a benzoate ester function at the other. The role of the thiol is to act as a protic polarity-reversal catalyst to promote the overall abstraction of the acetal hydrogen atom by a nucleophilic alkyl radical. The redox rearrangement is carried out in refluxing octane and/or chlorobenzene

  衍生自碳水化合物中1,2-或1,3-二醇官能团的五元或六元环状亚苄基乙缩醛经过有效的硫醇催化的自由基链氧化还原重排，导致一个二醇末端的脱氧并形成一个苯甲酸酯的作用相反。硫醇的作用是充当质子极性反转催化剂，以促进亲核烷基自由基对乙缩醛氢原子的整体提取。氧化还原重排是在回流辛烷和/或氯苯作为溶剂的条件下进行的。温度为130摄氏度，由热分解二叔丁基过氧化物（DTBP）或2,2-双（叔丁基过氧）丁烷引发。硅烷硫醇（Bu（t）O）3SiSH和Pr（i）3SiSH（TIPST）是特别有效的催化剂，DTBP与TIPST结合使用通常是最有效和方便的组合。该反应已通过1，2-，3，4-和4，6-O-亚苄基吡喃糖酶和5，6-O-亚苄基呋喃糖用于各种单糖的单脱氧。它也已被用于引起甘露糖和二糖α，α-海藻糖的双脱氧。对甲氧基亚苄基乙缩醛的使用没有太大优势，并且在相似条件下，乙缩醛不会发生明显的氧化还原重排。官能团
• Preparation of Disaccharide Haptens Corresponding to<i>Salmonella</i>Serogroups B and D
  作者：Korien Zegelaar-Jaarsveld、Simon C. van der Plas、Gijs A. van der Marel、Jacques H. van Boom

  DOI：10.1080/07328309608005684

  日期：1996.8

  The properly protected ethyl 1-thio-abequopyranoside 11 and ethyl 1-thio-tyvelo-pyranoside 26 were prepared by a sequence of reactions, the key step of which was the regioselective hydride-mediated ring-opening of the cyclic sulfate function in compounds 8 and 18. Iodonium ion-assisted glycosylation of allyl mannopyranoside 30 with the individual ethyl 3,6-dideoxy-1-thio-D-hexopyranoside donors 11 and 26 furnished, after deprotection, the respective allyl 3-O-(alpha-D-abequopyranosyl)-alpha-D-mannopyranoside 1 and allyl 3-O-(alpha-D-tyvelopyranosyl)-alpha-D-mannopyranoside 2.