2,5-bis((E)-4-(tert-butyl)benzylidene)cyclopentan-1-one | 1158188-83-0

• 分子结构分类: 有机化合物 - 苯类化合物 - 苯和取代衍生物
• 英文名称: 2,5-bis((E)-4-(tert-butyl)benzylidene)cyclopentan-1-one
• 英文别名: (2E,5E)-2,5-bis(4-tert-butylbenzylidene)cyclopentanone；(2E,5E)-2,5-bis[(4-tert-butylphenyl)methylidene]cyclopentan-1-one
• CAS: 1158188-83-0
• 化学式: C₂₇H₃₂O
• 分子量: 372.55
• InChiKey: PTJSJRNIPATLFA-KSTNYAOJSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.9
• 重原子数：
  28
• 可旋转键数：
  4
• 环数：
  3.0
• sp3杂化的碳原子比例：
  0.37
• 拓扑面积：
  17.1
• 氢给体数：
  0
• 氢受体数：
  1

反应信息

• 作为反应物：
  描述：

  2,5-bis((E)-4-(tert-butyl)benzylidene)cyclopentan-1-one 在 氢气 、 C₃₇H₃₆IrNOP⁽¹⁺⁾*C₃₂H₁₂BF₂₄^(1-) 作用下， 以 邻二甲苯 为溶剂， 20.0 ℃ 、3.0 MPa 条件下， 以98 %的产率得到(2S,5S)-2,5-bis(4-(tert-butyl)benzyl)cyclopentan-1-one
  参考文献：
  名称：

  铱催化2,5-二亚烷基环戊酮双不对称氢化合成手性环戊酮

  摘要：

  在此，我们报道了一种有效的铱催化双不对称氢化 2,5-二亚烷基环戊酮，以优异的收率和立体选择性提供手性 2,5-二取代环戊酮。动力学实验和对照实验的结果表明，两个C=C键是逐步加氢的，第二个立体中心是由手性催化剂和单加氢产物的手性协同控制的。氢化产物可以以克级制备并且易于衍生化。

  DOI：

  10.1021/acs.orglett.2c02656
• 作为产物：
  描述：

  对叔丁基苯甲醛 、 环戊酮 在 sodium hydroxide 作用下， 以 乙醇 、 水 为溶剂， 以89 %的产率得到2,5-bis((E)-4-(tert-butyl)benzylidene)cyclopentan-1-one
  参考文献：
  名称：

  铱催化2,5-二亚烷基环戊酮双不对称氢化合成手性环戊酮

  摘要：

  在此，我们报道了一种有效的铱催化双不对称氢化 2,5-二亚烷基环戊酮，以优异的收率和立体选择性提供手性 2,5-二取代环戊酮。动力学实验和对照实验的结果表明，两个C=C键是逐步加氢的，第二个立体中心是由手性催化剂和单加氢产物的手性协同控制的。氢化产物可以以克级制备并且易于衍生化。

  DOI：

  10.1021/acs.orglett.2c02656

文献信息

• Exploration and synthesis of curcumin analogues with improved structural stability both in vitro and in vivo as cytotoxic agents
  作者：Guang Liang、Lili Shao、Yi Wang、Chengguang Zhao、Yanhui Chu、Jian Xiao、Yu Zhao、Xiaokun Li、Shulin Yang

  DOI：10.1016/j.bmc.2008.10.044

  日期：2009.3

  Curcumin has a surprisingly wide range of chemo-preventive and chemo-therapeutic activities and is under investigation for the treatment of various human cancers. However, the clinical application of curcumin has been significantly limited by its instability and poor metabolic property. Although a number of synthetic modi. cations of curcumin have been studied intensively in order to develop a molecule with enhanced bioactivities, few synthetic studies were done for the improvement of pharmacokinetic profiles. In the present study, a series of mono-carbonyl analogues of curcumin were designed and synthesized by deleting the reactive beta-diketone moiety, which was considered to be responsible for the pharmacokinetic limitation of curcumin. The results of the in vitro stability studies and in vivo pharmacokinetic studies indicated that the stability of these mono-carbonyl analogues was greatly enhanced in vitro and their pharmacokinetic profiles were also significantly improved in vivo. Furthermore, the cytotoxic activities of mono-carbonyl analogues were evaluated in seven different tumor cell lines by MTT assay and the structure-activity relation (SAR) was discussed and concluded. The results suggest that the five-carbon linker-containing analogues of curcumin may be favorable for the curcumin-based drug development both pharmacokinetically and pharmacologically. (C) 2009 Published by Elsevier Ltd.
• Iridium-Catalyzed Double Asymmetric Hydrogenation of 2,5-Dialkylienecyclopentanones for the Synthesis of Chiral Cyclopentanones
  作者：Yu Nie、Qianjia Yuan、Feng Gao、Masahiro Terada、Wanbin Zhang

  DOI：10.1021/acs.orglett.2c02656

  日期：2022.11.4

  Herein, we report an efficient iridium-catalyzed double asymmetric hydrogenation of 2,5-dialkylienecyclopentanones, delivering the chiral 2,5-disubstituted cyclopentanones in excellent yields and stereoselectivities. The results of the kinetic experiments and control experiments indicated that the two C═C bonds were hydrogenated in a stepwise manner and the second stereocenter was synergistically controlled

  在此，我们报道了一种有效的铱催化双不对称氢化 2,5-二亚烷基环戊酮，以优异的收率和立体选择性提供手性 2,5-二取代环戊酮。动力学实验和对照实验的结果表明，两个C=C键是逐步加氢的，第二个立体中心是由手性催化剂和单加氢产物的手性协同控制的。氢化产物可以以克级制备并且易于衍生化。