Methyl 2,3,5,6-tetra-O-benzoyl-β-D-galactofuranoside | 77874-38-5

• 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: Methyl 2,3,5,6-tetra-O-benzoyl-β-D-galactofuranoside
• 英文别名: [(2R)-2-benzoyloxy-2-[(2S,3S,4R,5R)-3,4-dibenzoyloxy-5-methoxyoxolan-2-yl]ethyl] benzoate
• CAS: 77874-38-5
• 化学式: C₃₅H₃₀O₁₀
• 分子量: 610.617
• InChiKey: OPSJPPGMFUMQNJ-XFUYZNCPSA-N

物化性质

• 沸点：
  726.9±60.0 °C(Predicted)
• 密度：
  1.34±0.1 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  4.89
• 重原子数：
  45.0
• 可旋转键数：
  11.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.2
• 拓扑面积：
  123.66
• 氢给体数：
  0.0
• 氢受体数：
  10.0

反应信息

• 作为反应物：
  描述：

  Methyl 2,3,5,6-tetra-O-benzoyl-β-D-galactofuranoside 在 正丁基锂 、 碘代三甲硅烷 、 硫酸 、 碘 、 sodium 、 sodium hydride 、 碳酸氢钠 、 溶剂黄146 作用下， 以 四氢呋喃 、 甲醇 、 四氯化碳 、 乙醚 、 正己烷 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 26.5h， 生成 C-(1-deoxy-α-D-galactofuranosyl)methanephosphonic acid
  参考文献：
  名称：

  d-Galactofuranosylphosphonates. First Synthesis of UDP-C-d-galactofuranose

  摘要：

  The chemical synthesis of two phosphono analogues of D-galactofuranosyl phosphate was performed. The natural phosphate seemed to be too labile to allow the chemical synthesis of UDP-Galf, these C-galactofuranosides are stable pharmacophores, and the cr-phosphono analogue has been easily converted into UDP-C-Galf. UDP-C-Galf was tested as a competitive inhibitor of UDP-galactopyranose mutase and showed inhibition of Galf formation. Thus, it is of potential interest as an antimycobacterial agent; as an active molecule against Trypanosoma cruzi, the causative agent of South American trypanosomiasis (Chagas' disease), and as a stable analogue for use in UDP-galactopyranose mutase crystallization studies.

  DOI：

  10.1021/jo990196p
• 作为产物：
  描述：

  1,2,3,5,6-penta-O-benzoyl-D-galactofuranose 生成 Methyl 2,3,5,6-tetra-O-benzoyl-β-D-galactofuranoside
  参考文献：
  名称：

  MARINO, CARLA;VARELA, OSCAR;LEDERKREMER, ROSA M. DE, CARBOHYDR. RES., 190,(1989) N, C. 65-76

  摘要：

  DOI：

文献信息

• Synthesis of galactofuranose disaccharides of biological significance
  作者：Carla Marino、Oscar Varela、Rosa M. de Lederkremer

  DOI：10.1016/0008-6215(89)84147-3

  日期：1989.7

  disaccharide derivative having both units in the furanoid form. Thus, diisoamylborane reduction of the lactone function of 6 led to the disaccharide derivative 10, from which the methyl glycoside 12 was prepared. O-Debenzoylation of 12 gave the corresponding methyl beta-D-galactofuranosyl-(1----6)-beta-D-galactofuranoside. The free disaccharide beta-D-Galf-(1----6)-D-Galp and its acetylated derivative were

  通过氯化锡（IV）催化五-O-苯甲酰基-α，β-D-半乳糖呋喃糖的糖基化，然后用甲醇钠进行脱苯甲酰化，可以轻松获得甲基β-D-半乳糖呋喃糖苷。将1，与2,3,5-三-O-苯甲酰基-D-半乳糖基-1,4-内酯或与6-O-三苯甲基-内酯衍生物5进行糖基化，得到苯甲酰化的β-D-D-半呋喃糖基-（1- --6）-D-半乳糖-1,4-内酯6，收率极高。通过硼氢化物还原成糖基-糖醇7证实了二糖6的结构。1与4或5的缩合反应的副产物被鉴定为苯甲酰化的（1-1）-β，β'-D-半乳糖呋喃糖基二糖8。在氯化锡的存在下，通过向1中加水可容易地制备化合物8（收率88％）。8的O-脱苯甲酰化得到结晶的β' -D-半呋喃糖基-（1 ---- 1）-β-D-半呋喃糖苷 糖基内酯6构成用于合成具有两个呋喃形式的二糖衍生物的关键中间体。因此，内酯官能团的二异戊基硼烷还原导致二糖衍生物10，由此制备了甲基糖苷12。12的
• Differential O-3/O-4 regioselectivity in the glycosylation of α and β anomers of 6-O-substituted N-dimethylmaleoyl-protected d-glucosamine acceptors
  作者：María L. Bohn、María I. Colombo、Pablo L. Pisano、Carlos A. Stortz、Edmundo A. Rúveda

  DOI：10.1016/j.carres.2007.08.006

  日期：2007.12

  An assessment of the relative O-3/O-4 reactivities of both methyl alpha- and beta-D-glycosides of N-dimethylmaleoyl (DMM) D-glucosamine acceptors protected at O-6 with benzoyl (Bz), benzyl (Bn), and tert-butyldiphenylsilyl (TBDPS) groups is presented using per-O-benzoylated beta-D-galactofuranosyl and per-O-acetylated alpha-D-galactopyranosyl trichloroacetimidates as glycosyl donors. Using the former donor, the a anomer of the 6-O-benzoylated compound gave exclusive substitution at O-3, whereas the other two compounds with a-configuration kept this site as preferential. The P anomer of the 6-O-benzoylated compound gave the same amounts of reaction products on O-3 and O-4, whereas the other P analogs carried a more reactive O-4. The same reactions were carried out using as donor the less-reactive per-O-acetylated alpha-D-galactopyranosyl trichloroacetimidate. Although the same trend was found to occur, the O-4 was always relatively more reactive with the pyranosyl donor than with the furanosyl donor, when keeping the remaining factors constant. Furthermore, the P anomers of the acceptor gave almost exclusive substitution at O-4. These observations confirm and extend the utility of these 'matching' donor and acceptor reactivities. (c) 2007 Elsevier Ltd. All rights reserved.