2-debenzoyl-2-cyclohexanoylpaclitaxel | 155371-41-8

• 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: 2-debenzoyl-2-cyclohexanoylpaclitaxel
• 英文别名: 2-(hexahydro)paclitaxel；[(1S,2S,3R,4S,7R,9S,10S,12R,15S)-4,12-diacetyloxy-15-[(2R,3S)-3-benzamido-2-hydroxy-3-phenylpropanoyl]oxy-1,9-dihydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] cyclohexanecarboxylate
• CAS: 155371-41-8
• 化学式: C₄₇H₅₇NO₁₄
• 分子量: 859.968
• InChiKey: YIZIPFKUMXAHCY-MZXODVADSA-N

物化性质

• 熔点：
  154-156 °C
• 沸点：
  947.7±65.0 °C(predicted)
• 密度：
  1.36±0.1 g/cm3(Temp: 20 °C; Press: 760 Torr)(predicted)

计算性质

• 辛醇/水分配系数(LogP)：
  2.9
• 重原子数：
  62
• 可旋转键数：
  14
• 环数：
  7.0
• sp3杂化的碳原子比例：
  0.57
• 拓扑面积：
  221
• 氢给体数：
  4
• 氢受体数：
  14

反应信息

• 作为反应物：
  描述：

  2-debenzoyl-2-cyclohexanoylpaclitaxel 以 四氯化碳 为溶剂， 反应 20.0h， 以40%的产率得到
  参考文献：
  名称：

  Studies on the photochemistry of taxol®

  摘要：

  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.

  DOI：

  10.1016/s0040-4020(01)85337-0
• 作为产物：
  描述：

  巴卡丁 III 在 吡啶 、 咪唑 、 4-二甲氨基吡啶 、 氢氟酸 、 N,N'-二环己基碳二亚胺 、 红铝 、 lithium hexamethyldisilazane 作用下， 以 四氢呋喃 、 N,N-二甲基甲酰胺 、 甲苯 、 乙腈 为溶剂， 反应 13.5h， 生成 2-debenzoyl-2-cyclohexanoylpaclitaxel
  参考文献：
  名称：

  Studies on the photochemistry of taxol®

  摘要：

  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.

  DOI：

  10.1016/s0040-4020(01)85337-0

文献信息

• Structure–activity relationship study of taxoids for their ability to activate murine macrophages as well as inhibit the growth of macrophage-like cells
  作者：Iwao Ojima、Cecilia L Fumero-Oderda、Scott D Kuduk、Zhuping Ma、Fumiko Kirikae、Teruo Kirikae

  DOI：10.1016/s0968-0896(03)00181-0

  日期：2003.7

  A series of new taxoids modified at the C-3', C-3'N, C-10, C-2 and C-7 positions has been designed, synthesized and evaluated for their potency to induce NO and TNF production by peritoneal murine macrophages (Mphi) from LPS-responsive C3H/HeN and LPS-hyporesponsive C3H/HeJ strains and human blood cells, and for their ability to inhibit the growth of Mphi-like cell lines J774.1 and J7.DEF3. The SAR-study has shown that the nature of the substituents at these positions have critical effect on the induction of TNF and NO production by Mphi. Positions G-3' and C-10 are the most flexible and an intriguing effect of the length of the substituents at the C-10 position is observed for taxoids bearing a straight chain alkanoyl moiety. An aromatic group at the C-3'N and C-2 positions is required for the activity, while only hydroxyl or acetyl substituents seem to be tolerated at the C-7 position. The natural stereochemistry in the C-13 isoserine side chain of the taxoids is an absolute requirement for macrophage activation. It has also been clearly shown that there is no correlation between the ability of the taxoids to induce TNF/NO production in C3H/HeN M and the cytotoxicity against Mphi-like cells. (C) 2003 Elsevier Science Ltd. All rights reserved.
• Synthesis and Structure-Activity Relationships of New Antitumor Taxoids. Effects of Cyclohexyl Substitution at the C-3' and/or C-2 of Taxotere (Docetaxel)
  作者：Iwao Ojima、Olivier Duclos、Martine Zucco、Marie-Christine Bissery、C. Combeau、P. Vrignaud、J. F. Riou、Francois Lavelle

  DOI：10.1021/jm00042a013

  日期：1994.8

  Synthesis and cytotoxicity of the new analogs (11-13) of docetaxel possessing cyclohexyl groups instead of phenyl groups at the C-3' and/or C-2 benzoate positions are described. The C-2 cyclohexanecarboxylate analog of paclitaxel(15) is also synthesized for comparison. The potency of these new taxoids were examined for their inhibitory activity for microtubule disassembly and also for their cytotoxicity against murine P388 leukemia cell line as well. as doxorubicin-resistant P388 leukemia cell line (P388/Dox). It is found that 3'-dephenyl-3'-cyclohexyldocetaxel (11) (0.72T) and 2-(hexahydro)docetaxel (12) (0.85T) possess strong inhibitory activity for microtubule disassembly equivalent to docetaxel (0.7T), which is more potent than paclitaxel (1.0T). The results clearly indicate that phenyl or an aromatic group at C-3' or C-2 is not a requisite for strong binding to the microtubules. This finding has opened an avenue for development of new nonaromatic analogs of docetaxel and paclitaxel. 3'-Dephenyl-3'-cyclohexyl-2-(hexahydro)docetaxel (13) (2T) turns out to be a substantially weaker inhibitor. The cytotoxicities of 11-13 against P388 are, however, in the same range that is 8-12 times weaker than docetaxel and 4-6 times weaker than paclitaxel, i.e., 13 shows equivalent cytotoxicity to that of 11 or 12 in spite of much lower microtubule disassembly inhibitory activity. The cytotoxicities of these new taxoids against the P388/Dox cell line are only 2-2.5 times lower than that of docetaxel. The potency of 2-(hexahydro)paclitaxel (15) for these assays is much lower than the docetaxel counterpart 12. The significant loss of activity in vivo against B16 melanoma is observed for 11-13, i.e., 11 is only marginal (T/C = 38% at 20 mg/kg/day), and 12 and 13 are inactive (T/C = 76% and 79%, respectively). This could be ascribed to faster metabolism, faster excretion or other bioavailability problems.