(2S,3S,4S)-2-docosanoylamino-1,3-O-(1,1,3,3-tetraisopropyldisiloxan-1,3-diyl)-1,3,4-octadecanetriol | 167255-95-0

• 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: (2S,3S,4S)-2-docosanoylamino-1,3-O-(1,1,3,3-tetraisopropyldisiloxan-1,3-diyl)-1,3,4-octadecanetriol
• CAS: 167255-95-0
• 化学式: C₅₂H₁₀₇NO₅Si₂
• 分子量: 882.596
• InChiKey: RMUAROUQNBCCGK-IINJCIBDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  16.7
• 重原子数：
  60.0
• 可旋转键数：
  39.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.98
• 拓扑面积：
  77.02
• 氢给体数：
  2.0
• 氢受体数：
  5.0

反应信息

• 作为反应物：
  描述：

  (2S,3S,4S)-2-docosanoylamino-1,3-O-(1,1,3,3-tetraisopropyldisiloxan-1,3-diyl)-1,3,4-octadecanetriol 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 反应 0.5h， 以80%的产率得到(2S,3S,4S)-2-docosanoylamino-1,3,4-octadecanetriol
  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
• 作为产物：
  描述：

  (2S,3S,4R)-2-docosanoylamino-1,3,4-octadecanetriol 在 吡啶 、 sodium tetrahydroborate 、 重铬酸吡啶 作用下， 以 四氢呋喃 、 乙醇 、 二氯甲烷 为溶剂， 反应 11.0h， 生成 (2S,3S,4S)-2-docosanoylamino-1,3-O-(1,1,3,3-tetraisopropyldisiloxan-1,3-diyl)-1,3,4-octadecanetriol
  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