(2aR,4S,4aS,6R,9S,11S,12aS,12bS)-11-(benzoyloxy)-4a,8,13,13-tetramethyl-5-oxo-4,9-bis((triethylsilyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate | 155370-94-8

• 分子结构分类: 有机化合物 - 脂质和类脂质分子 - 异戊烯醇脂质
• 英文名称: (2aR,4S,4aS,6R,9S,11S,12aS,12bS)-11-(benzoyloxy)-4a,8,13,13-tetramethyl-5-oxo-4,9-bis((triethylsilyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate
• CAS: 155370-94-8
• 化学式: C₄₃H₆₆O₁₀Si₂
• 分子量: 799.162
• InChiKey: MVKSEIMKXJKTTN-WGMJCFRBSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  8.74
• 重原子数：
  55.0
• 可旋转键数：
  14.0
• 环数：
  5.0
• sp3杂化的碳原子比例：
  0.72
• 拓扑面积：
  123.66
• 氢给体数：
  0.0
• 氢受体数：
  10.0

反应信息

• 作为反应物：
  描述：

  (2aR,4S,4aS,6R,9S,11S,12aS,12bS)-11-(benzoyloxy)-4a,8,13,13-tetramethyl-5-oxo-4,9-bis((triethylsilyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate 在 四丁基氟化铵 作用下， 以 四氢呋喃 为溶剂， 以57%的产率得到
  参考文献：
  名称：

  The Chemistry of Taxanes: Skeletal Rearrangements of Baccatin Derivatives via Radical Intermediates

  摘要：

  In the course of a synthetic program aimed at systematic defunctionalization of the taxol core for structure activity studies, a number of radical-based deoxygenation reactions were carried out on baccatin III derivatives. In this connection, we have discovered that formation of radicals at positions C-1, C-2, and C-7 in the taxane core of baccatin III results in a number of skeletal rearrangement cascades. Furthermore, the exact composition of the product mixture depends on the specific tin (or silicon) hydride used for the reduction. In the case of C-2- and C-7-derived radicals, direct quenching with tin hydrides without rearrangement was possible under some conditions. However, we were unable to find conditions to quench the C-1 radical, since rearrangement pathways always predominate in this case.

  DOI：

  10.1021/jo00085a040
• 作为产物：
  描述：

  巴卡丁 III 在 咪唑 、 偶氮二异丁腈 、 三正丁基氢锡 、 sodium hydride 作用下， 以 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 25.0h， 生成 (2aR,4S,4aS,6R,9S,11S,12aS,12bS)-11-(benzoyloxy)-4a,8,13,13-tetramethyl-5-oxo-4,9-bis((triethylsilyl)oxy)-3,4,4a,5,6,9,10,11,12,12a-decahydro-1H-7,11-methanocyclodeca[3,4]benzo[1,2-b]oxete-6,12b(2aH)-diyl diacetate
  参考文献：
  名称：

  The Chemistry of Taxanes: Skeletal Rearrangements of Baccatin Derivatives via Radical Intermediates

  摘要：

  In the course of a synthetic program aimed at systematic defunctionalization of the taxol core for structure activity studies, a number of radical-based deoxygenation reactions were carried out on baccatin III derivatives. In this connection, we have discovered that formation of radicals at positions C-1, C-2, and C-7 in the taxane core of baccatin III results in a number of skeletal rearrangement cascades. Furthermore, the exact composition of the product mixture depends on the specific tin (or silicon) hydride used for the reduction. In the case of C-2- and C-7-derived radicals, direct quenching with tin hydrides without rearrangement was possible under some conditions. However, we were unable to find conditions to quench the C-1 radical, since rearrangement pathways always predominate in this case.

  DOI：

  10.1021/jo00085a040