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Updated: Jul 12, 2025

Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
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Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines

Published on: June 23, 2019

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作为生物活性化合物的N-Pyrazinylhydroxybenzamides:一个打击扩展研究和抗菌评估

Marek Kerda1, Petr Šlechta1, Ondrej Jand'ourek1

  • 1Faculty of Pharmacy in Hradec Králové, Charles University, Hradec Králové, 500 05, Czech Republic.

Future medicinal chemistry
|October 25, 2023
PubMed
概括

研究人员探索了用于抗菌药物开发的新型氧胺,发现了对葡萄球菌和*Mycobacterium tuberculosis*有效的化合物. 这些药物抑制蛋白质合成并使细菌膜脱极化,为新的抗生素提供了有希望的头.

关键词:
它是一种抗菌药物,具有抗菌作用.抗微生物耐药性 抗微生物耐药性这是一种抗菌性抗菌体.击中扩张的扩张.宏分子检测试验 宏分子检测试验膜去极化 膜去极化最低杀菌度的细菌杀菌剂.结构活动关系结构活动关系在水中溶解度水溶性.

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Basicity of Heterocyclic Aromatic Amines01:25

Basicity of Heterocyclic Aromatic Amines

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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Aryldiazonium Salts to Azo Dyes: Diazo Coupling

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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Physical Properties of Amines01:26

Physical Properties of Amines

Amines with low molecular weight are usually gaseous at room temperature, while those with high molecular weight are liquid or solids in nature. Usually, low molecular weight amines have a rotten fish-like smell. Diamines typically have a pungent smell. For instance, cadaverine and putrescine, depicted in Figure 1, are two molecules responsible for decaying tissue.
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Adrenergic Agonists: Chemistry and Structure-Activity Relationship

Adrenergic agonists' structure-activity relationship (SAR) determines their selectivity and efficacy. These agonists comprise a phenylethylamine moiety with an aromatic ring and an ethylamine side chain.
Aromatic ring substitutions: Substituting the aromatic ring with –OH groups at positions 3 and 4 yields catecholamines (e.g., epinephrine), which have a high affinity for adrenoceptors. Hydrogen bonding between –OH groups and receptors enhances adrenergic activity.
Separation of...
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