(R,E)-methyl 4-((1R,2S,4S)-2-((S,E)-6-((tert-butyldimethylsilyl)oxy)hept-1-en-1-yl)-4-hydroxycyclopentyl)-4-((2-methoxyethoxy)methoxy)but-2-enoate | 157918-08-6

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 脂肪酰基
• 英文名称: (R,E)-methyl 4-((1R,2S,4S)-2-((S,E)-6-((tert-butyldimethylsilyl)oxy)hept-1-en-1-yl)-4-hydroxycyclopentyl)-4-((2-methoxyethoxy)methoxy)but-2-enoate
• CAS: 157918-08-6
• 化学式: C₂₇H₅₀O₇Si
• 分子量: 514.775
• InChiKey: YLFIXDPHFDQUJE-BQAWDJLESA-N

物化性质

• 沸点：
  543.1±50.0 °C(Predicted)
• 密度：
  1.036±0.06 g/cm3(Temp: 20 °C; Press: 760 Torr)(Predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  5.25
• 重原子数：
  35.0
• 可旋转键数：
  16.0
• 环数：
  1.0
• sp3杂化的碳原子比例：
  0.81
• 拓扑面积：
  83.45
• 氢给体数：
  1.0
• 氢受体数：
  7.0

反应信息

• 作为反应物：
  描述：

  (R,E)-methyl 4-((1R,2S,4S)-2-((S,E)-6-((tert-butyldimethylsilyl)oxy)hept-1-en-1-yl)-4-hydroxycyclopentyl)-4-((2-methoxyethoxy)methoxy)but-2-enoate 在 盐酸 、 4-二甲氨基吡啶 、 lithium hydroxide 、 2,4,6-三氯苯甲酰氯 、 三乙胺 、 N,N-二异丙基乙胺 作用下， 以 二氯甲烷 为溶剂， 反应 56.0h， 生成 (1R,6S,11aS,13S,14aR)-1,13-bis[(2-methoxyethoxy)methoxy]-6-methyl-1,6,7,8,9,11a,12,13,14,14a-decahydro-4H-cyclopenta[f]oxacyclotridecin-4-one
  参考文献：
  名称：

  Synthesis of (+)-brefeldin-A

  摘要：

  Two routes to (+)-brefeldin A have been investigated. In one the bicyclic ketone 2 was transformed into the hydroxy lactone 7. Subsequent reduction, opening of the heterocyclic ring and epimerization furnished the aldehyde 13. Further steps towards the natural product from this late stage intermediate 13 were not investigated. in the second route, the readily available hydroxy lactone 17 was converted into the enone 22. Conjugate addition of the requisite cuprate reagent to this enone afforded the 3,4-disubstituted cyclopentanone 24 which was converted into brefeldin-A 29 in five steps.

  DOI：

  10.1039/p19940003431
• 作为产物：
  描述：

  (+)-(3S,3aS,6aS)-3-hydroxy-3,3a,6,6a-tetrahydro-cyclopenta[b]furan-2-one 在 甲基锂 、 二异丁基氢化铝 、 对甲苯磺酸 、 N,N-二异丙基乙胺 、 pyridinium chlorochromate 作用下， 以 四氢呋喃 、 乙醚 、 二氯甲烷 、 甲苯 为溶剂， 反应 45.5h， 生成 (R,E)-methyl 4-((1R,2S,4S)-2-((S,E)-6-((tert-butyldimethylsilyl)oxy)hept-1-en-1-yl)-4-hydroxycyclopentyl)-4-((2-methoxyethoxy)methoxy)but-2-enoate
  参考文献：
  名称：

  Synthesis of (+)-brefeldin-A

  摘要：

  Two routes to (+)-brefeldin A have been investigated. In one the bicyclic ketone 2 was transformed into the hydroxy lactone 7. Subsequent reduction, opening of the heterocyclic ring and epimerization furnished the aldehyde 13. Further steps towards the natural product from this late stage intermediate 13 were not investigated. in the second route, the readily available hydroxy lactone 17 was converted into the enone 22. Conjugate addition of the requisite cuprate reagent to this enone afforded the 3,4-disubstituted cyclopentanone 24 which was converted into brefeldin-A 29 in five steps.

  DOI：

  10.1039/p19940003431