(2R,5S,6R)-5-(benzyloxy)-6-(benzyloxymethyl)-2-(naphthalen-2-yloxy)-5,6-dihydro-2H-pyran-3-carbaldehyde | 1171170-40-3

• 分子结构分类: 有机化合物 - 苯类化合物 - 萘
• 英文名称: (2R,5S,6R)-5-(benzyloxy)-6-(benzyloxymethyl)-2-(naphthalen-2-yloxy)-5,6-dihydro-2H-pyran-3-carbaldehyde
• 英文别名: (2R,3S,6R)-6-naphthalen-2-yloxy-3-phenylmethoxy-2-(phenylmethoxymethyl)-3,6-dihydro-2H-pyran-5-carbaldehyde
• CAS: 1171170-40-3
• 化学式: C₃₁H₂₈O₅
• 分子量: 480.56
• InChiKey: NLBAZWAODDENEJ-YPKYBTACSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  5.3
• 重原子数：
  36
• 可旋转键数：
  10
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.19
• 拓扑面积：
  54
• 氢给体数：
  0
• 氢受体数：
  5

反应信息

• 作为产物：
  描述：

  (2R,3S,4S)-3-(benzyloxy)-2-(benzyloxymethyl)-5-formyl-3,4-dihydro-2H-pyran-4-yl acetate 、 2-萘酚 在 sodium 作用下， 以 二氯甲烷 为溶剂， 以70%的产率得到(2R,5S,6R)-5-(benzyloxy)-6-(benzyloxymethyl)-2-(naphthalen-2-yloxy)-5,6-dihydro-2H-pyran-3-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

文献信息

• Regio- and Stereocontrolled Selective Debenzylation and Substitution Reactions of C<i>-</i>2 Formyl Glycals. Application in the Synthesis of Constrained β-Sugar Amino Acids
  作者：Girish K. Rawal、Shikha Rani、Nitee Kumari、Yashwant D. Vankar

  DOI：10.1021/jo9008222

  日期：2009.8.7

  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.