1-deoxy-1-[(4'R,2'E)-4'-(4''-methoxybenzyloxy)-2'-octadecenyl]-2,3,4,6-tetra-O-benzyl-α-D-galactopyranose | 1337559-26-8

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 1-deoxy-1-[(4'R,2'E)-4'-(4''-methoxybenzyloxy)-2'-octadecenyl]-2,3,4,6-tetra-O-benzyl-α-D-galactopyranose
• 英文别名: (2R,3S,4R,5S,6R)-2-[(E,4R)-4-[(4-methoxyphenyl)methoxy]octadec-2-enyl]-3,4,5-tris(phenylmethoxy)-6-(phenylmethoxymethyl)oxane
• CAS: 1337559-26-8
• 化学式: C₆₀H₇₈O₇
• 分子量: 911.275
• InChiKey: SNTOVLJMXNVRMF-RPBBKVGCSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  14.9
• 重原子数：
  67
• 可旋转键数：
  33
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.47
• 拓扑面积：
  64.6
• 氢给体数：
  0
• 氢受体数：
  7

反应信息

• 作为产物：
  描述：

  (2R)-2-[(4-methoxyphenyl)methoxy]hexadecanal 在 RuCl2(1,3-dimesityl-imidazolidin-2-yl)(PCy3)(=CHPh) 、 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 、 二氯甲烷 为溶剂， 反应 30.0h， 生成 1-deoxy-1-[(4'R,2'E)-4'-(4''-methoxybenzyloxy)-2'-octadecenyl]-2,3,4,6-tetra-O-benzyl-α-D-galactopyranose
  参考文献：
  名称：

  Total Synthesis of α-1C-Galactosylceramide, an Immunostimulatory C-Glycosphingolipid, and Confirmation of the Stereochemistry in the First-Generation Synthesis

  摘要：

  A nonisosteric alpha-C-glycoside analogue of KRN7000 (alpha-1C-GalCer, 1) was reported to induce a selective type of cytokine release in human invariant natural killer cells in vitro. We report here a very concise synthetic route to 1 and its analogue 1'. The key steps include olefin cross-metathesis, Sharpless asymmetric epoxidation, and epoxide opening by NaN3/NH4Cl. Inversion of configuration at the amide-bearing carbon in the phytosphingosine backbone constructed by epoxide opening in our previous synthesis of 1 was verified, indicating that remote group participation is not involved during the epoxide-opening reaction.

  DOI：

  10.1021/jo201450s

文献信息

• Total Synthesis of α-1<i>C</i>-Galactosylceramide, an Immunostimulatory <i>C</i>-Glycosphingolipid, and Confirmation of the Stereochemistry in the First-Generation Synthesis
  作者：Zheng Liu、Hoe-Sup Byun、Robert Bittman

  DOI：10.1021/jo201450s

  日期：2011.11.4

  A nonisosteric alpha-C-glycoside analogue of KRN7000 (alpha-1C-GalCer, 1) was reported to induce a selective type of cytokine release in human invariant natural killer cells in vitro. We report here a very concise synthetic route to 1 and its analogue 1'. The key steps include olefin cross-metathesis, Sharpless asymmetric epoxidation, and epoxide opening by NaN3/NH4Cl. Inversion of configuration at the amide-bearing carbon in the phytosphingosine backbone constructed by epoxide opening in our previous synthesis of 1 was verified, indicating that remote group participation is not involved during the epoxide-opening reaction.