晶体结构,光谱学,DFT,以及对3--2- (H) -pyridones作为潜在的抗癌剂的热学研究
Diana Hurtado-Rodríguez1, Diana Becerra1, Hugo Rojas1
1Grupo de Catálisis de la UPTC, Escuela de Ciencias Químicas, Universidad Pedagógica y Tecnológica de Colombia Avenida Central del Norte 39-115 Tunja 150003 Colombia juan.castillo06@uptc.edu.co.
RSC advances
|August 13, 2024
概括
合成了新的皮里衍生物,显示出有前途的抗癌活性. 这些化合物显示出治疗非小细胞肺癌和乳腺癌的潜力,特定分子表现出显著的生长抑制.
科学领域:
- 药用化学 医学化学
- 有机合成 有机合成
- 晶体学 晶体学是指结晶学.
背景情况:
- 3-cyano-2(1H) -pyridones 是一种具有潜在生物活性的异环化合物的类.
- 探索新型合成路径并描述这些化合物的结构和电子特性对于药物发现至关重要.
研究的目的:
- 通过高效的微波辅助多元组分反应合成一系列3 - - 2 - 1H - 里.
- 阐明合成化合物的晶体结构,超分子相互作用,电子性质和热稳定性.
- 为了评估合成的皮里衍生物的体外抗癌活性,与人类癌症细胞系的小组进行对比.
主要方法:
- 微波辅助的多元组件合成
- 单晶X射线衍射 (XRD) 分析
- 密度函数理论 (DFT) 的计算.
- 频谱表征 (FT-IR,UV-Vis,NMR,HMRS) 是一个非常简单的方法.
- 热分析 (DSC,TGA) 的方法
- 在体外查抗癌活性查.
主要成果:
- 通过微波辐射实现的3-cyano-2(1H) -pyridones (4a-c) 的高效合成.
- XRD揭示了通过N-HO,C-HO,C-Hπ,C-Nπ,ππ和C-HX相互作用稳定的详细的晶体包装.
- DFT计算提供了对电子结构和绑定亲和关系的见解.
- 光谱和热分析证实了化合物的结构和稳定性.
- 化合物4a和4c在体外对非小细胞肺癌 (HOP-92) 和乳腺癌 (MCF7) 细胞系表现出显著的抗癌活性,其生长抑制百分比分别为54.35%和40.25%.
结论:
- 这项研究成功地合成和表征了新型的3-cyano-2(1H) -pyridone衍生物.
- 这些化合物表现出复杂的超分子相互作用,对晶体稳定至关重要.
- 观察到有前途的体外抗癌活性,特别是4a和4c化合物,突出了它们作为抗癌药物开发的潜在原因.
相关概念视频
Aromatic Hydrocarbon Cations: Structural Overview
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Cycloheptatriene is a neutral monocyclic unsaturated hydrocarbon that consists of an odd number of carbon atoms and an intervening sp3 carbon in the ring. The three double bonds in the ring correspond to 6 π electrons, which is a Huckel number, and therefore satisfies the criteria of 4n + 2 π electrons. However, the intervening sp3 carbon disrupts the continuous overlap of p orbitals. As a result, cycloheptatriene is not aromatic.
Removing one hydrogen from the intervening CH2 group...
Removing one hydrogen from the intervening CH2 group...
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Neutral hydrocarbons like cyclopentadiene with an odd number of carbon atoms and one intervening CH2 group in the ring are not aromatic. Cyclopentadiene with 4 π electrons does not satisfy the 4n + 2 π electron rule. Additionally, the intervening CH2 group is sp3 hybridized and lacks a vacant p orbital, thereby interrupting the overlap of p orbitals in a continuous manner and preventing the delocalization of π electrons throughout the ring.
Due to the absence of continuous...
Due to the absence of continuous...
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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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