(S)-tert-butyl 2-methyloctadecanoate | 1448242-59-8

• 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: (S)-tert-butyl 2-methyloctadecanoate
• 英文别名: tert-butyl (2S)-2-methyloctadecanoate
• CAS: 1448242-59-8
• 化学式: C₂₃H₄₆O₂
• 分子量: 354.617
• InChiKey: OCYVGSLBGRJMBN-NRFANRHFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  10.1
• 重原子数：
  25
• 可旋转键数：
  18
• 环数：
  0.0
• sp3杂化的碳原子比例：
  0.96
• 拓扑面积：
  26.3
• 氢给体数：
  0
• 氢受体数：
  2

反应信息

• 作为反应物：
  描述：

  (S)-tert-butyl 2-methyloctadecanoate 在 三乙基硅烷 、 4-二甲氨基吡啶 、 二氯苯酚溴酯 、 N,N'-二环己基碳二亚胺 、 三氟乙酸 作用下， 以 二氯甲烷 为溶剂， 反应 12.0h， 生成 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：

  Hexadecylmagnesium chloride 、 tert-butyl (S)-2-(((trifluoromethyl)sulfonyl)oxy)propanoate 在 zinc(II) chloride 作用下， 以 四氢呋喃 为溶剂， 反应 3.0h， 以81%的产率得到(S)-tert-butyl 2-methyloctadecanoate
  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

文献信息

• Synthesis of a <i>Mycobacterium tuberculosis</i> Tetra-acylated Sulfolipid Analogue and Characterization of the Chiral Acyl Chains Using Anisotropic NAD 2D-NMR Spectroscopy
  作者：Aurélie Lemétais、Yann Bourdreux、Philippe Lesot、Jonathan Farjon、Jean-Marie Beau

  DOI：10.1021/jo4012255

  日期：2013.8.2

  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.