(2R,3R,4S)-1,3-O-benzylidene-1,2,3,4-octadecanetetrol | 117168-65-7

• 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: (2R,3R,4S)-1,3-O-benzylidene-1,2,3,4-octadecanetetrol
• 英文别名: 1,3-O-benzylidene-D-xylo-1,2,3,4-octadecanetetrol；(2S,4R,5R)-4-[(1S)-1-hydroxypentadecyl]-2-phenyl-1,3-dioxan-5-ol
• CAS: 117168-65-7
• 化学式: C₂₅H₄₂O₄
• 分子量: 406.606
• InChiKey: SUAVQPLMGLSXJH-LIONHTAISA-N

物化性质

• 沸点：
  547.0±45.0 °C(Predicted)
• 密度：
  1.023±0.06 g/cm3(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.9
• 重原子数：
  29
• 可旋转键数：
  15
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.76
• 拓扑面积：
  58.9
• 氢给体数：
  2
• 氢受体数：
  4

反应信息

• 作为反应物：
  描述：

  (2R,3R,4S)-1,3-O-benzylidene-1,2,3,4-octadecanetetrol 在 盐酸 、 lithium aluminium tetrahydride 、 sodium azide 作用下， 以 四氢呋喃 、 吡啶 、 甲醇 、 水 、 N,N-二甲基甲酰胺 为溶剂， 反应 76.5h， 生成 (2S,3S,4S)-2-aminooctadecane-1,3,4-triol
  参考文献：
  名称：

  d-核糖和l-lyxo-植物鞘氨醇的合成：转化为相应的乳糖基神经酰胺

  摘要：

  摘要2,4-O-苄叉基-d-苏糖（2）与十四烷基溴化镁反应生成d-阿拉伯糖-和1-xylo-十八碳烯醇衍生物3a和3x，为易于分离的混合物。这些化合物分别通过区域选择性甲基化，叠氮化物置换，亚苄基裂解和叠氮化物还原分别转化为d-核糖-（1r）和1- lyxo-植物鞘氨醇（1l）。中间体叠氮基衍生物7r和7l的3,4-O-异亚丙基化得到1-O-糖基受体2-叠氮基-3,4-O-异亚丙基-d-核糖-1,3,4-十八碳三醇（8r）和2-叠氮基-3,4-O-异亚丙基-1-lyxo-1,3,4-十八碳三醇（8l）。用三氯乙酰亚氨酸酯活化的乳糖基供体9，预期的糖苷2-叠氮基-1-O-（2,3,6,2'，3'，4'，6'-庚基-O-乙酰基-β-乳糖基）- 3，

  DOI：

  10.1016/0008-6215(88)85090-0
• 作为产物：
  描述：

  1,3-O-benzylidene-(D-arabino/L-xylo)-1,2,3,4-octadecanetetrol 在 重铬酸吡啶 、 L-Selectride 、 zinc(II) chloride 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 为溶剂， 反应 76.0h， 生成 (2R,3R,4S)-1,3-O-benzylidene-1,2,3,4-octadecanetetrol
  参考文献：
  名称：

  Sphingosine and phytosphingosine from D-threose synthesis of a 4-keto-ceramide

  摘要：

  Reaction of 2,4-O-benzylidene-D-threose 3 with tetradecyl magnesium bromide furnished D-arabino- and L-xylo-octadecane-1,2,3,4-tetrols 5a,x. Regioselective oxidation of the 4-OH group gave 4-keto-D-erythro-derivative 6 which can be reduced with acetaldehyde in a SmI2-catalyzed Tishtshenko reaction to afford exclusively 5a. Regioselective 2-O-mesylation of 5a (--> 7a) and then acid catalyzed debenzylation afforded exclusively 2-O-mesyl-tetrol 9a. Reaction with NaN3 and ensuing azide reduction furnished D-ribo-C-18-phytosphingosine (2) in high overall yield. Treatment of 2-O-mesyl derivatives 7a,x with NaN3 and then with 4-nitrobenzenesulfonyl chloride in pyridine afforded 11r,l. Elimination with DBU or, alternatively, by treatment with phenylselenide and then with H2O2, gave known 1,3-O-benzylidene protected azidosphingosine 14, which can be readily converted into sphingosine (1). Transformation of 2 into ceramide 15, selective 1,3-O-silyl protection, oxidation of the 4-OH group (--> 17) and then desilylation afforded the 4-keto ceramide 18 found in a marine sponge. Reduction of 17 offers a convenient possibility for radioactive labelling of ceramides with tritium.

  DOI：

  10.1016/s0957-4166(00)86295-3

文献信息

• Synthesis and immunostimulatory activity of two α-S-galactosyl phenyl-capped ceramides
  作者：Niamh Murphy、Andreea Petrasca、Niamh M. Murphy、Vincent O′Reilly、Paul Evans、Derek G. Doherty、Xiangming Zhu

  DOI：10.3998/ark.5550190.0014.224

  日期：——

  Two α-S-linked galactosylceramides carrying ω-phenyl fatty acid chains were efficiently synthesized and were shown to have in vitro stimulatory activity for human natural killer T cells.

  两种携带 ω-苯基脂肪酸链的 α-S 连接的半乳​​糖神经酰胺被有效合成，并被证明对人类自然杀伤 T 细胞具有体外刺激活性。
• Sphingosine and phytosphingosine from D-threose synthesis of a 4-keto-ceramide
  作者：Robert Wild、Richard R. Schmidt

  DOI：10.1016/s0957-4166(00)86295-3

  日期：1994.11

  Reaction of 2,4-O-benzylidene-D-threose 3 with tetradecyl magnesium bromide furnished D-arabino- and L-xylo-octadecane-1,2,3,4-tetrols 5a,x. Regioselective oxidation of the 4-OH group gave 4-keto-D-erythro-derivative 6 which can be reduced with acetaldehyde in a SmI2-catalyzed Tishtshenko reaction to afford exclusively 5a. Regioselective 2-O-mesylation of 5a (--> 7a) and then acid catalyzed debenzylation afforded exclusively 2-O-mesyl-tetrol 9a. Reaction with NaN3 and ensuing azide reduction furnished D-ribo-C-18-phytosphingosine (2) in high overall yield. Treatment of 2-O-mesyl derivatives 7a,x with NaN3 and then with 4-nitrobenzenesulfonyl chloride in pyridine afforded 11r,l. Elimination with DBU or, alternatively, by treatment with phenylselenide and then with H2O2, gave known 1,3-O-benzylidene protected azidosphingosine 14, which can be readily converted into sphingosine (1). Transformation of 2 into ceramide 15, selective 1,3-O-silyl protection, oxidation of the 4-OH group (--> 17) and then desilylation afforded the 4-keto ceramide 18 found in a marine sponge. Reduction of 17 offers a convenient possibility for radioactive labelling of ceramides with tritium.
• Synthesis of d-ribo- and l-lyxo-phytosphingosine: Transformation into the corresponding lactosyl-ceramides
  作者：Richard R. Schmidt、Thomas Maier

  DOI：10.1016/0008-6215(88)85090-0

  日期：1988.3

  3,6,2′,3′,4′,6′-hepta- O -acetyl-β-lactosyl)-3,4- O -isopropylidene- d - ribo - and - l - lyxo -1,3,4-octadecanetriol ( 10r and 10l ) were obtained, which were conveniently transformed into the corresponding unprotected glycosphingolipids 14r and 14l

  摘要2,4-O-苄叉基-d-苏糖（2）与十四烷基溴化镁反应生成d-阿拉伯糖-和1-xylo-十八碳烯醇衍生物3a和3x，为易于分离的混合物。这些化合物分别通过区域选择性甲基化，叠氮化物置换，亚苄基裂解和叠氮化物还原分别转化为d-核糖-（1r）和1- lyxo-植物鞘氨醇（1l）。中间体叠氮基衍生物7r和7l的3,4-O-异亚丙基化得到1-O-糖基受体2-叠氮基-3,4-O-异亚丙基-d-核糖-1,3,4-十八碳三醇（8r）和2-叠氮基-3,4-O-异亚丙基-1-lyxo-1,3,4-十八碳三醇（8l）。用三氯乙酰亚氨酸酯活化的乳糖基供体9，预期的糖苷2-叠氮基-1-O-（2,3,6,2'，3'，4'，6'-庚基-O-乙酰基-β-乳糖基）- 3，