2-Deoxy-4,5-O-isopropylidene-3-O-methyl-D-manno-heptose trimethylene dithioacetal | 162879-58-5

• 分子结构分类: 有机化合物 - 有机氧化合物
• 英文名称: 2-Deoxy-4,5-O-isopropylidene-3-O-methyl-D-manno-heptose trimethylene dithioacetal
• 英文别名: (1R)-1-[(4R,5R)-5-[(1R)-2-(1,3-dithian-2-yl)-1-methoxyethyl]-2,2-dimethyl-1,3-dioxolan-4-yl]ethane-1,2-diol
• CAS: 162879-58-5
• 化学式: C₁₄H₂₆O₅S₂
• 分子量: 338.489
• InChiKey: NAAIYSFPOTZFCQ-FPQZTECRSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  1.1
• 重原子数：
  21
• 可旋转键数：
  6
• 环数：
  2.0
• sp3杂化的碳原子比例：
  1.0
• 拓扑面积：
  119
• 氢给体数：
  2
• 氢受体数：
  7

反应信息

• 作为反应物：
  描述：

  2-Deoxy-4,5-O-isopropylidene-3-O-methyl-D-manno-heptose trimethylene dithioacetal 在 吡啶 、 盐酸 、 4-二甲氨基吡啶 、 sodium methylate 、 sodium hydride 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 85.0h， 生成 4,5-Anhydro-2-deoxy-3,6,7-tri-O-methyl-D-altro-heptose trimethylene dithioacetal
  参考文献：
  名称：

  From Sugars to Carbocycles. 2. Three- to Seven-Membered Rings from Mannose by Addition of 1,3-Dithiane Followed by Intramolecular Displacement Reaction

  摘要：

  A new methodology for the conversion of sugars to three-, four-, six-, and seven-membered rings is presented. The sequence of transformations is demonstrated with mannose (1) and involves addition of 2-lithio-1,3-dithiane to the acetonide 2 followed by elimination and reduction to the 2-deoxy-dithiane 6. Starting from this intermediate, appropriate activation (tosylate, epoxide) and protection (acetonide, methyl ether) yields 8, 18, and 23, the starting materials for carbocyclization, which are converted by nucleophile displacement to the optically active cyclopropane 9, cyclobutane 19, cyclohexane 24, and cycloheptane 25, respectively. The cyclopropyl-1,3-dithane 9 can be desulfurized to the cyclopropane 10.

  DOI：

  10.1021/jo00099a043
• 作为产物：
  描述：

  2-Deoxy-4,5:6,7-di-O-isopropylidene-D-manno-heptose trimethylene dithioacetal 在 盐酸 、 sodium hydride 作用下， 以 四氢呋喃 、 甲醇 为溶剂， 反应 26.0h， 生成 2-Deoxy-4,5-O-isopropylidene-3-O-methyl-D-manno-heptose trimethylene dithioacetal
  参考文献：
  名称：

  From Sugars to Carbocycles. 2. Three- to Seven-Membered Rings from Mannose by Addition of 1,3-Dithiane Followed by Intramolecular Displacement Reaction

  摘要：

  A new methodology for the conversion of sugars to three-, four-, six-, and seven-membered rings is presented. The sequence of transformations is demonstrated with mannose (1) and involves addition of 2-lithio-1,3-dithiane to the acetonide 2 followed by elimination and reduction to the 2-deoxy-dithiane 6. Starting from this intermediate, appropriate activation (tosylate, epoxide) and protection (acetonide, methyl ether) yields 8, 18, and 23, the starting materials for carbocyclization, which are converted by nucleophile displacement to the optically active cyclopropane 9, cyclobutane 19, cyclohexane 24, and cycloheptane 25, respectively. The cyclopropyl-1,3-dithane 9 can be desulfurized to the cyclopropane 10.

  DOI：

  10.1021/jo00099a043