通过常规的希夫基反应合成,晶体结构,DFT和一些imine型化合物的抗癌活性:意外循环转化为氧化衍生物的一个例子
Jamal Lasri1, Naser E Eltayeb1, Saied M Soliman2
1Department of Chemistry, Rabigh College of Science and Arts, King Abdulaziz University, P.O. Box 344, Jeddah 21589, Saudi Arabia.
Molecules (Basel, Switzerland)
|June 28, 2023
概括
研究人员合成了新型的imine化合物和一种oxazine衍生物,评估了它们的抗癌潜力. 化合物1对HepG2和MCF-7细胞系表现出最显著的抗癌活性,显示出药物开发的前景.
科学领域:
- 有机合成和药用化学
- 材料科学和晶体学 材料科学和晶体学
- 计算化学和分子建模计算化学和分子建模
背景情况:
- 胺基衍生物和异环化合物因其多样化的生物活性而得到认可.
- 新型抗癌药物的开发对于对抗癌症至关重要,癌症是全球死亡的主要原因.
- 了解结构-活性关系是设计有效治疗化合物的关键.
研究的目的:
- 合成和表征新型伊米因类化合物和一种氧化衍生物.
- 为了研究合成化合物对人类癌症细胞系的抗癌性质.
- 阐明影响晶体包装和性质的结构特征和分子间相互作用.
主要方法:
- 从替代甲和基衍生物中合成氧基和希夫基.
- 使用单晶X射线衍射和光谱技术 (NMR) 的结构特征.
- 通过细胞活力测定 (IC50确定) 和计算研究 (DFT) 评估抗癌活性.
主要成果:
- 四种化合物 (1-4) 被成功合成,结构3和4通过X射线衍射得到确认.
- 希尔什菲尔德分析显示了显著的O...H,N...H和C...H相互作用,有助于晶体稳定.
- 化合物1-4对HepG2和MCF-7细胞表现出抗癌活性,其中化合物1显示出最低的IC50值.
结论:
- 合成的伊和氧衍生物具有显著的抗癌性质.
- 化合物1被确定为作为抗癌剂进一步开发的有希望的候选物.
- 结构和计算分析提供了关于它们活动和稳定的分子基础的见解.
相关概念视频
Aldehydes and Ketones with Amines: Imine and Enamine Formation Overview
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Primary amines react with carbonyl compounds—aldehydes and ketones—to generate imines. Imines consist of a C=N double bond and are named Schiff bases after its discoverer—the German chemist Hugo Schiff. On the other hand, secondary amines react with carbonyl compounds to give enamines. In enamines, the presence of a C=C double bond adjacent to the nitrogen atom leads to the delocalization of the lone pair.
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Imine formation involves the addition of carbonyl compounds to a primary amine. It begins with the generation of carbinolamine through a series of steps involving an initial nucleophilic attack and then several proton transfer reactions. The second part includes the elimination of water, as a leaving group, to give the imine.
Imines are formed under mildly acidic conditions. A pH of 4.5 is ideal for the reaction.
If the pH is low or the solution is too acidic, the reaction slows down in the...
Imines are formed under mildly acidic conditions. A pH of 4.5 is ideal for the reaction.
If the pH is low or the solution is too acidic, the reaction slows down in the...
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Heterocyclic amines, where the N atom is a part of an alicyclic system, are similar in basicity to alkylamines. Interestingly, the heterocyclic amine having a nitrogen atom as part of an aromatic ring has much less basicity than its corresponding alicyclic counterpart. For this reason, as presented in Figure 1, piperidine (pKb = 2.8) is significantly more basic than pyridine (pKb = 8.8).
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The reaction of weakly electrophilic aryldiazonium (also called arenediazonium) salts with highly activated aromatic compounds leads to the formation of products with an —N=N— link, called an azo linkage. This reaction, presented in Figure 1, is known as diazo coupling and occurs without the loss of the nitrogen atoms of the aryldiazonium salt. Highly activated aromatic compounds such as phenols or arylamines favor the diazo coupling reaction. The coupling generally occurs at the...
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Cyclic ethers are heterocyclic compounds with an oxygen atom in the ring along with carbon atoms. They are named depending on the number of carbon atoms present in their ring system. Cyclic ethers with a three-membered ring system are called “oxirane”, four-membered ring systems as “oxetane”, five-membered ring systems as “oxolane”, and six-membered ring systems as “oxane”. The cyclic structure of these rings imposes angle strain, and this strain...
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