2,6-anhydro-3,4-O-isopropylidene-β-D-talopyranosyl-(1->4)-2,3:5,6-di-O-isopropylidene-aldehydo-D-glucose dimethyl acetal | 1215311-08-2

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2,6-anhydro-3,4-O-isopropylidene-β-D-talopyranosyl-(1->4)-2,3:5,6-di-O-isopropylidene-aldehydo-D-glucose dimethyl acetal
• CAS: 1215311-08-2
• 化学式: C₂₃H₃₈O₁₁
• 分子量: 490.548
• InChiKey: FJQFUEJBWRHCIY-GOOUIEGFSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.31
• 重原子数：
  34.0
• 可旋转键数：
  7.0
• 环数：
  6.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  101.53
• 氢给体数：
  0.0
• 氢受体数：
  11.0

反应信息

• 作为产物：
  描述：

  3,4-O-isopropylidene-6-O-p-toluenesulfonyl-β-D-talopyranosyl-(1->4)-2,3:5,6-di-O-isopropylidene-aldehydo-D-glucose dimethyl acetal 在 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 mineral oil 为溶剂， 以96%的产率得到2,6-anhydro-3,4-O-isopropylidene-β-D-talopyranosyl-(1->4)-2,3:5,6-di-O-isopropylidene-aldehydo-D-glucose dimethyl acetal
  参考文献：
  名称：

  Lactose as an inexpensive starting material for the preparation of aldohexos-5-uloses: synthesis of l-ribo and d-lyxo derivatives

  摘要：

  Partially protected derivatives of L-ribo- and D-lyxo-aldohexos-5-ulose have been prepared starting from triacetonlactose dimethyl acetal derivatives. Key steps of the synthetic sequences are (a) the synthesis of 4'-deoxy-4'-eno- and 6'-deoxy-5'-eno lactose derivatives, and (b) the epoxidation-methanolysis of the above-mentioned enol ethers to give 1,5-bis-glycopyranosides, masked form of the target 1,5-dicarbonyl hexoses. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.carres.2009.11.027