[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-12-(2,3,4,5,6-pentafluorophenoxy)carbothioyloxy-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate | 149140-53-4

• 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: [(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-12-(2,3,4,5,6-pentafluorophenoxy)carbothioyloxy-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate
• CAS: 149140-53-4
• 化学式: C₄₂H₄₉F₅O₁₁SSi
• 分子量: 884.988
• InChiKey: IYWYWFVFRLOBIZ-RUOQVNLYSA-N

物化性质

• 沸点：
  782.4±70.0 °C(predicted)
• 密度：
  1.38±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  7.2
• 重原子数：
  60
• 可旋转键数：
  14
• 环数：
  6.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  179
• 氢给体数：
  2
• 氢受体数：
  17

反应信息

• 作为反应物：
  描述：

  [(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-12-(2,3,4,5,6-pentafluorophenoxy)carbothioyloxy-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate 在 咪唑 、 偶氮二异丁腈 、 三正丁基氢锡 、 红铝 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 、 甲苯 为溶剂， 反应 1.67h， 生成 (2aR,4S,4aS,9S,11S,12S,12aR,12bS)-11,12-dihydroxy-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]oxet-12b(2aH)-yl acetate
  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：

  10-脱乙酰基巴卡丁 III 在 咪唑 、 正丁基锂 作用下， 以 四氢呋喃 、 正己烷 、 N,N-二甲基甲酰胺 为溶剂， 反应 2.17h， 生成 [(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4-acetyloxy-1,15-dihydroxy-10,14,17,17-tetramethyl-11-oxo-12-(2,3,4,5,6-pentafluorophenoxy)carbothioyloxy-9-triethylsilyloxy-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate
  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

文献信息

• Studies on the photochemistry of taxol®
  作者：Shi-Hui Chen、Vittorio Farina、Stella Huang、Qi Gao、Jerzy Golik、Terrence W. Doyle

  DOI：10.1016/s0040-4020(01)85337-0

  日期：1994.1

  Irradiation of taxol at 280 nm in a Rayonet reactor yielded a novel pentacyclic derivative containing a new bond between C-3 and C-II. The proposed mechanism involves a triplet intermediate and the first event of the oxa-di-pi-merhane rearrangement. Taxane derivatives that lack both the benzoate at C-2 and the benzamide function at C-3' do not undergo the rearrangement, suggesting the intervention of an intramolecular energy transfer. Irradiation at 300 nm also effects extrusion of the C-9 carbonyl, yielding a ring-contracted product.
• Synthesis of 7-deoxy- and 7,10-dideoxytaxol via radical intermediates
  作者：Shu Hui Chen、Stella Huang、Joydeep Kant、Craig Fairchild、Jianmei Wei、Vittorio Farina

  DOI：10.1021/jo00071a002

  日期：1993.9

  7-Deoxytaxol and 7,10-dideoxytaxol were prepared from baccatin III, employing the Barton deoxygenation procedure and the Holton acylation method at C-13.
• Iimura, Shin; Ohsuki, Satoru; Uoto, Kouichi, Heterocycles, 2000, vol. 53, # 7, p. 1579 - 1582
  作者：Iimura, Shin、Ohsuki, Satoru、Uoto, Kouichi、Nakayama, Kiyoshi、Terasawa, Hirofumi、Soga, Tsunehiko

  DOI：——

  日期：——