(2R,3R,4S)-3-(benzyloxy)-2-(benzyloxymethyl)-5-formyl-3,4-dihydro-2H-pyran-4-yl acetate | 1171169-76-8

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: (2R,3R,4S)-3-(benzyloxy)-2-(benzyloxymethyl)-5-formyl-3,4-dihydro-2H-pyran-4-yl acetate
• 英文别名: [(2R,3R,4S)-5-formyl-3-phenylmethoxy-2-(phenylmethoxymethyl)-3,4-dihydro-2H-pyran-4-yl] acetate
• CAS: 1171169-76-8
• 化学式: C₂₃H₂₄O₆
• 分子量: 396.44
• InChiKey: DKNMKOXLQHKPSN-VJBWXMMDSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.3
• 重原子数：
  29
• 可旋转键数：
  10
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.3
• 拓扑面积：
  71.1
• 氢给体数：
  0
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (2R,3R,4S)-3-(benzyloxy)-2-(benzyloxymethyl)-5-formyl-3,4-dihydro-2H-pyran-4-yl acetate 在 sodium azide 作用下， 以 N,N-二甲基甲酰胺 为溶剂， 反应 4.0h， 以88%的产率得到(2R,3R,4S)-4-azido-3-(benzyloxy)-2-(benzyloxymethyl)-3,4-dihydro-2H-pyran-5-carbaldehyde
  参考文献：
  名称：

  Regio- and Stereocontrolled Selective Debenzylation and Substitution Reactions of C-2 Formyl Glycals. Application in the Synthesis of Constrained β-Sugar Amino Acids

  摘要：

  O-Benzyl-protected C-2 formyl glycals are regioselectively deprotected and acetylated first at C-3 and then at C-6 upon treatment with a ZnCl2-Ac2O-AcOH reagent combination. Treatment of the thus-obtained C-3 acetate with various nucleophiles leads to substitution at C-3 with retention of stereochemistry in the galactal series, whereas mixed results were obtained with glucal-derived compounds. Two of the azido-substituted products were converted into the corresponding beta-sugar amino acids.

  DOI：

  10.1021/jo9008222
• 作为产物：
  描述：

  (2R,3R,4S)-3,4-bis(benzyloxy)-2-(benzyloxymethyl)-3,4-dihydro-2H-pyran-5-carbaldehyde 、 乙酸酐 在 溶剂黄146 、 zinc(II) chloride 作用下， 以 二氯甲烷 为溶剂， 以80%的产率得到(2R,3R,4S)-3-(benzyloxy)-2-(benzyloxymethyl)-5-formyl-3,4-dihydro-2H-pyran-4-yl acetate
  参考文献：
  名称：

  Regio- and Stereocontrolled Selective Debenzylation and Substitution Reactions of C-2 Formyl Glycals. Application in the Synthesis of Constrained β-Sugar Amino Acids

  摘要：

  O-Benzyl-protected C-2 formyl glycals are regioselectively deprotected and acetylated first at C-3 and then at C-6 upon treatment with a ZnCl2-Ac2O-AcOH reagent combination. Treatment of the thus-obtained C-3 acetate with various nucleophiles leads to substitution at C-3 with retention of stereochemistry in the galactal series, whereas mixed results were obtained with glucal-derived compounds. Two of the azido-substituted products were converted into the corresponding beta-sugar amino acids.

  DOI：

  10.1021/jo9008222