(3aR,4R,7aR)-4-[(1R)-1,2-dihydroxyethyl]-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-one | 1055039-59-2

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 二氧吡喃
• 英文名称: (3aR,4R,7aR)-4-[(1R)-1,2-dihydroxyethyl]-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-one
• CAS: 1055039-59-2
• 化学式: C₁₀H₁₆O₆
• 分子量: 232.233
• InChiKey: VYXMVKUQGGTAEE-SQEXRHODSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  -1.1
• 重原子数：
  16
• 可旋转键数：
  2
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.9
• 拓扑面积：
  85.2
• 氢给体数：
  2
• 氢受体数：
  6

反应信息

• 作为反应物：
  描述：

  (3aR,4R,7aR)-4-[(1R)-1,2-dihydroxyethyl]-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-one 在 sodium hydroxide 、 二甲基硫 、 叔丁基锂 、 4-甲基苯磺酸吡啶 、 臭氧 、 溶剂黄146 作用下， 以 N,N-二甲基甲酰胺 、 丙酮 为溶剂， 反应 2.75h， 生成 3-deoxy-α-D-manno-oct-2-ulosonic acid
  参考文献：
  名称：

  Asymmetric Syn-Selective Aldol Reactions of γ-Oxygenated Vinylogous Urethane with a Second Generation Chiral Auxiliary:  Application in Construction of (+)-3-Deoxy-d-manno-2-octulosonic Acid

  摘要：

  Various examples of highly diastereoselective aldol reactions are presented where the nonracemic lithium enolate 6 derived from a C4-oxygenated vinylogous urethane reacts in syn fashion to provide upon intramolecular lactonization useful gamma-alkoxy-delta-lactone synthons 12a-f. In one particular example, the result of reaction with an acrolein surrogate, the lactone product 12e is applied in an efficient asymmetric synthesis of(+)-KDO (10 steps, 34% overall yield). Notable transformations include (1) hydrolysis of the vinylogous urethane functionality, (2) stereoselective reduction of the resulting beta-keto-lactone 2, (3) stereoselective dihydroxylation of the vinyl side chain of delta-lactone 17, and (4) addition of alpha-ethoxy-vinyllithium to the lactone carbonyl of 19 to procure the aldulosonic acid residue in 1 upon ozonolysis.

  DOI：

  10.1021/jo981916f
• 作为产物：
  描述：

  (3aR,4R,7aR)-4-ethenyl-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-one 在 四氧化锇 、 N-甲基吲哚酮 作用下， 以 四氢呋喃 、 水 、 丙酮 、 叔丁醇 为溶剂， 生成 (3aR,4R,7aR)-4-[(1R)-1,2-dihydroxyethyl]-2,2-dimethyl-3a,4,7,7a-tetrahydro-[1,3]dioxolo[4,5-c]pyran-6-one
  参考文献：
  名称：

  Asymmetric Syn-Selective Aldol Reactions of γ-Oxygenated Vinylogous Urethane with a Second Generation Chiral Auxiliary:  Application in Construction of (+)-3-Deoxy-d-manno-2-octulosonic Acid

  摘要：

  Various examples of highly diastereoselective aldol reactions are presented where the nonracemic lithium enolate 6 derived from a C4-oxygenated vinylogous urethane reacts in syn fashion to provide upon intramolecular lactonization useful gamma-alkoxy-delta-lactone synthons 12a-f. In one particular example, the result of reaction with an acrolein surrogate, the lactone product 12e is applied in an efficient asymmetric synthesis of(+)-KDO (10 steps, 34% overall yield). Notable transformations include (1) hydrolysis of the vinylogous urethane functionality, (2) stereoselective reduction of the resulting beta-keto-lactone 2, (3) stereoselective dihydroxylation of the vinyl side chain of delta-lactone 17, and (4) addition of alpha-ethoxy-vinyllithium to the lactone carbonyl of 19 to procure the aldulosonic acid residue in 1 upon ozonolysis.

  DOI：

  10.1021/jo981916f