4-nitro-N-tetradecyl-2,1,3-benzoxadiazol-7-amine | 1257874-07-9

• 分子结构分类: 有机化合物 - 有机杂环化合物 - 苯并恶二唑类
• 英文名称: 4-nitro-N-tetradecyl-2,1,3-benzoxadiazol-7-amine
• CAS: 1257874-07-9
• 化学式: C₂₀H₃₂N₄O₃
• 分子量: 376.499
• InChiKey: PBPUMLYIBFZXDG-UHFFFAOYSA-N

计算性质

• 辛醇/水分配系数(LogP)：
  7.7
• 重原子数：
  27
• 可旋转键数：
  14
• 环数：
  2.0
• sp3杂化的碳原子比例：
  0.7
• 拓扑面积：
  96.8
• 氢给体数：
  1
• 氢受体数：
  6

反应信息

• 作为产物：
  描述：

  十四胺 、 4-氯-7-硝基苯并-2-氧杂-1,3-二唑 在 碳酸氢钠 作用下， 以 甲醇 为溶剂， 以8 %的产率得到4-nitro-N-tetradecyl-2,1,3-benzoxadiazol-7-amine
  参考文献：
  名称：

  中链脂质缀合促进细胞渗透性和生物活性

  摘要：

  大多数生物活性分子作用于膜蛋白或细胞内靶标，因此需要进入或穿过生物膜。天然产物通常表现出脂质修饰，以促进关键的分子-膜相互作用，并且在许多情况下，在去除脂质基团后，它们的生物活性显着降低。然而，尽管小分子的脂质缀合在自然界中很重要，但在化学生物学和药物化学中并不常用，并且这种缀合的效果尚未得到系统研究。为了了解天然产物中脂质的组成，我们对“天然产物脂质组”进行了化学信息学表征。根据该分析，脂化天然产物主要含有饱和中链脂质（MCL），其明显短于膜和脂化蛋白质中发现的长链脂质（LCL）。为了研究此类修饰在探针设计中的有用性，我们系统地探讨了脂质缀合对五种不同小分子化学型的影响，并发现渗透性、细胞保留、亚细胞定位和生物活性可以根据所用脂质尾的类型进行显着调节。我们证明 MCL 缀合可以使分子具有细胞渗透性并调节其生物活性。在所有探索的化学型中，与 LCL 缀合物相比，MCL 缀合物始终表现出优异的吸收或生物活性，并且与短链脂质

  DOI：

  10.1021/jacs.2c07833

文献信息

• Chain Length Effect on the Binding of Amphiphiles to Serum Albumin and to POPC Bilayers
  作者：R. M. S. Cardoso、H. A. L. Filipe、F. Gomes、N. D. Moreira、W. L. C. Vaz、M. J. Moreno

  DOI：10.1021/jp105163k

  日期：2010.12.16

  The interaction of small molecules, such as drugs or metabolites, with proteins and biomembranes is of fundamental importance for their bioavailability. The systematic characterization of the binding affinity for structurally related ligands may provide rules that allow its prediction for any other relevant molecule. In this work we have studied a homologous series of fluorescent fatty amines with the fluorescent moiety 7-nitrobenz-2-oxa-1,3-diazol-4-yl covalently bound to the amine group (NBD-C-n; n = 4, 6, 8, 10, 12, 14, and 16) in aqueous solution and associated with BSA or lipid bilayers. We have found a linear dependence with the length of the alkyl chain, up to NBD-C-10, for the Gibb's free energy of partition between the aqueous solution and 1-palmitoyl-2-oleoyl phosphatidylcholine bilayers equal to Delta Delta G = 2.5 +/- 0.3 kJ/mol per methylene group. Additionally, the amphiphiles interacted efficiently with bovine serum albumin, and it was inhibited by fatty acids indicating that binding occurs to the fatty acids highest affinity binding site. The association of the amphiphiles with BSA and POPC bilayers was performed at different temperatures (15-35 degrees C) allowing for the calculation of the enthalpic and entropic contributions. A value of Delta H = -15 +/- 4 kJ/mol was obtained for all amphiphiles and binding agents. The entropy contribution was always positive and increased with the length of the alkyl chain. The location of the ligand in the biological membrane is also of high relevance, namely because this will determine its effect on biomembrane properties at high ligand concentrations. With this goal, we have measured some photophysical properties of the amphiphiles inserted in POPC bilayers, and we found no significant variation along the series, indicating that the NBD group is located in a region with similar properties regardless of the length of the nonpolar group. An exception was noted for the case of NBD-C-14 whose parameters were somewhat different from the trend observed.
• Medium-Chain Lipid Conjugation Facilitates Cell-Permeability and Bioactivity
  作者：Johannes Morstein、Alice Capecchi、Konstantin Hinnah、ByungUk Park、Jerome Petit-Jacques、Reid C. Van Lehn、Jean-Louis Reymond、Dirk Trauner

  DOI：10.1021/jacs.2c07833

  日期：2022.10.12

  the long-chain lipids (LCLs) found in membranes and lipidated proteins. To study the usefulness of such modifications in probe design, we systematically explored the effect of lipid conjugation on five different small molecule chemotypes and find that permeability, cellular retention, subcellular localization, and bioactivity can be significantly modulated depending on the type of lipid tail used. We

  大多数生物活性分子作用于膜蛋白或细胞内靶标，因此需要进入或穿过生物膜。天然产物通常表现出脂质修饰，以促进关键的分子-膜相互作用，并且在许多情况下，在去除脂质基团后，它们的生物活性显着降低。然而，尽管小分子的脂质缀合在自然界中很重要，但在化学生物学和药物化学中并不常用，并且这种缀合的效果尚未得到系统研究。为了了解天然产物中脂质的组成，我们对“天然产物脂质组”进行了化学信息学表征。根据该分析，脂化天然产物主要含有饱和中链脂质（MCL），其明显短于膜和脂化蛋白质中发现的长链脂质（LCL）。为了研究此类修饰在探针设计中的有用性，我们系统地探讨了脂质缀合对五种不同小分子化学型的影响，并发现渗透性、细胞保留、亚细胞定位和生物活性可以根据所用脂质尾的类型进行显着调节。我们证明 MCL 缀合可以使分子具有细胞渗透性并调节其生物活性。在所有探索的化学型中，与 LCL 缀合物相比，MCL 缀合物始终表现出优异的吸收或生物活性，并且与短链脂质