(4aR,8aS)-2,2-di-tert-butyl-7-thioxodihydropyrano[3,2-d][1,3,2]dioxasiline-6,8(4H,7H)-dione | 1157997-40-4

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并呋喃
• 英文名称: (4aR,8aS)-2,2-di-tert-butyl-7-thioxodihydropyrano[3,2-d][1,3,2]dioxasiline-6,8(4H,7H)-dione
• CAS: 1157997-40-4
• 化学式: C₁₄H₂₂O₅SSi
• 分子量: 330.477
• InChiKey: ILPQVUZQUKTTLS-SCZZXKLOSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  2.31
• 重原子数：
  21.0
• 可旋转键数：
  0.0
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.79
• 拓扑面积：
  61.83
• 氢给体数：
  0.0
• 氢受体数：
  6.0

反应信息

• 作为反应物：
  描述：

  3,4,6-三苄氧基-D-葡萄烯糖 、 (4aR,8aS)-2,2-di-tert-butyl-7-thioxodihydropyrano[3,2-d][1,3,2]dioxasiline-6,8(4H,7H)-dione 在 吡啶 作用下， 以 氯仿 为溶剂， 以175 mg的产率得到
  参考文献：
  名称：

  Stereoselective Synthesis of 1,3-Disaccharides through Diels-Alder Reactions: Part 2^{[ ]}: Convenient Protecting Groups for Heterodienes and Conformational Evaluations

  摘要：

  Improved synthesis of 1,3-disaccharides, obtained diastereomerically pure by [4+2] hetero cycloadditions between glycals and -thiono- -keto- -lactones, has been reported. The choice of appropriate protecting groups for -keto- -lactones, stable under cycloaddition conditions employed, sensibly shortened the synthesis of heterodienic precursors. The first example of a -oxy-imino- -lactone synthesized from -keto- -lactones was also reported. Molecular modeling and conformational evaluations about the cycloaddition features allowed tentatively rationalizing the experimental results.

  DOI：

  10.1080/07328300902752223
• 作为产物：
  描述：

  4,6-O-di-tert-butylsilylidene-2-deoxy-D-lyxo-1,5-hexonolactone 在 2-碘酰基苯甲酸 、 phthalimidesulfenyl chloride 作用下， 以 乙酸乙酯 、 氯仿 为溶剂， 反应 3.75h， 生成 (4aR,8aS)-2,2-di-tert-butyl-7-thioxodihydropyrano[3,2-d][1,3,2]dioxasiline-6,8(4H,7H)-dione
  参考文献：
  名称：

  Stereoselective Synthesis of 1,3-Disaccharides through Diels-Alder Reactions: Part 2^{[ ]}: Convenient Protecting Groups for Heterodienes and Conformational Evaluations

  摘要：

  Improved synthesis of 1,3-disaccharides, obtained diastereomerically pure by [4+2] hetero cycloadditions between glycals and -thiono- -keto- -lactones, has been reported. The choice of appropriate protecting groups for -keto- -lactones, stable under cycloaddition conditions employed, sensibly shortened the synthesis of heterodienic precursors. The first example of a -oxy-imino- -lactone synthesized from -keto- -lactones was also reported. Molecular modeling and conformational evaluations about the cycloaddition features allowed tentatively rationalizing the experimental results.

  DOI：

  10.1080/07328300902752223