3′-O-benzyl-4,6;4′,6′-di-O-benzylidene-2′-O-tert-butyldimethylsilyl-3-O-[(S)-2-methyloctadecanoyl]-2-O-palmitoyl-α,α-D-trehalose | 1448242-62-3

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 糖脂
• 英文名称: 3′-O-benzyl-4,6;4′,6′-di-O-benzylidene-2′-O-tert-butyldimethylsilyl-3-O-[(S)-2-methyloctadecanoyl]-2-O-palmitoyl-α,α-D-trehalose
• CAS: 1448242-62-3
• 化学式: C₇₄H₁₁₆O₁₃Si
• 分子量: 1241.81
• InChiKey: USSXDEGROWZINJ-ZNXJNPAASA-N

计算性质

• 辛醇/水分配系数(LogP)：
  18.47
• 重原子数：
  88.0
• 可旋转键数：
  41.0
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.73
• 拓扑面积：
  135.67
• 氢给体数：
  0.0
• 氢受体数：
  13.0

反应信息

• 作为反应物：
  描述：

  3′-O-benzyl-4,6;4′,6′-di-O-benzylidene-2′-O-tert-butyldimethylsilyl-3-O-[(S)-2-methyloctadecanoyl]-2-O-palmitoyl-α,α-D-trehalose 在 三乙基硅烷 、 二氯苯酚溴酯 作用下， 以 二氯甲烷 为溶剂， 反应 7.0h， 以71%的产率得到3′,4,4′-tri-O-benzyl-2′-O-tert-butyldimethylsilyl-3-O-[(S)-2-methyloctadecanoyl]-2-O-palmitoyl-α,α-D-trehalose
  参考文献：
  名称：

  Synthesis of a Mycobacterium tuberculosis Tetra-acylated Sulfolipid Analogue and Characterization of the Chiral Acyl Chains Using Anisotropic NAD 2D-NMR Spectroscopy

  摘要：

  Tetra-O-acylated sulfolipids are metabolites found in the cell wall of Mycobacterium tuberculosis, the causative agent of tuberculosis. Their role in pathogenesis remains, however, undefined. Here we describe a novel access to model tetra-O-acylated trehalose sulfate derivatives having simple acyl chains. The trehalose core was regioselectively protected using a tandem procedure with catalytic iron(III) chloride hexahydrate and further desymmetrized. Model chiral fatty acids, prepared by a zinc-mediated cross-coupling, were incorporated into the trehalose core. The enantiomeric excess of the chiral fatty acids has been measured by natural abundance deuterium (NAD) 2D-NMR spectroscopy in a polypeptide based chiral liquid crystal. The synthetic approach established for the model compounds can easily be developed for the preparation of other analogues and natural sulfolipids.

  DOI：

  10.1021/jo4012255
• 作为产物：
  描述：

  海藻糖 在 吡啶 、 2,6-二甲基吡啶 、 三乙基硅烷 、 4-二甲氨基吡啶 、 iron(III) chloride hexahydrate 、 palladium 10% on activated carbon 、 甲酸铵 、 N,N'-二环己基碳二亚胺 作用下， 以 甲醇 、 二氯甲烷 、 乙腈 为溶剂， 反应 11.75h， 生成 3′-O-benzyl-4,6;4′,6′-di-O-benzylidene-2′-O-tert-butyldimethylsilyl-3-O-[(S)-2-methyloctadecanoyl]-2-O-palmitoyl-α,α-D-trehalose
  参考文献：
  名称：

  Synthesis of a Mycobacterium tuberculosis Tetra-acylated Sulfolipid Analogue and Characterization of the Chiral Acyl Chains Using Anisotropic NAD 2D-NMR Spectroscopy

  摘要：

  Tetra-O-acylated sulfolipids are metabolites found in the cell wall of Mycobacterium tuberculosis, the causative agent of tuberculosis. Their role in pathogenesis remains, however, undefined. Here we describe a novel access to model tetra-O-acylated trehalose sulfate derivatives having simple acyl chains. The trehalose core was regioselectively protected using a tandem procedure with catalytic iron(III) chloride hexahydrate and further desymmetrized. Model chiral fatty acids, prepared by a zinc-mediated cross-coupling, were incorporated into the trehalose core. The enantiomeric excess of the chiral fatty acids has been measured by natural abundance deuterium (NAD) 2D-NMR spectroscopy in a polypeptide based chiral liquid crystal. The synthetic approach established for the model compounds can easily be developed for the preparation of other analogues and natural sulfolipids.

  DOI：

  10.1021/jo4012255