相关实验视频
Updated: Jul 27, 2025

05:07
Microwave-Assisted Preparation of 1-Aryl-1H-pyrazole-5-amines
Published on: June 23, 2019
6.7K
皮拉辛的药理活性和机制
Wen Hou1, Wei Dai1, Hao Huang1
1College of Pharmacy, Gannan Medical University, Ganzhou, 341000, PR China.
European journal of medicinal chemistry
|June 10, 2023
概括
本文重点介绍了生物活性pyrazine衍生物,重点关注它们的抗瘤潜力. 化皮拉异环,特别是与或伊米达,显示显著的抗瘤活性,指导未来的药物开发.
科学领域:
- 药用化学 医学化学
- 有机化学 有机化学
- 药理学 药理学是指药理学的学科.
背景情况:
- 含有,氧或硫的异环化合物在临床药物中普遍存在,这是由于它们的电子接受能力和结合潜力.
- 含有的异环物质Pyrazine及其衍生物因其多样化的生物活动而闻名.
- 与简单的基相比,在异环化合物中经常观察到增强的向结合.
研究的目的:
- 审查最活跃的pyrazine衍生物,详细说明它们的结构,体外和体内活动以及作用机制.
- 专注于皮拉衍生物的抗瘤活性.
- 为研究人员开发基于异环体的药物提供全面的资源,特别是那些涉及pyrazine的药物.
主要方法:
- 在主要的科学数据库中进行文献搜索:科学网,PubMed,科学直接,谷歌学者和SciFinder学者.
- 纳入标准侧重于研究报告的生物活性,特别是瘤效应的pyrazine衍生品.
- 排除仅专注于无报告生物活性的pyrazine衍生物的合成或化学的出版物.
主要成果:
- 皮拉衍生物具有显著的生物活性,特别强调它们的抗瘤特性.
- 具有与其他异循环 (如醇或伊米达) 融合的皮拉津环的化合物被广泛研究,并显示出强大的抗瘤作用.
- 该审查整合了这些有前途的化合物的结构-活性关系和作用机制的信息.
结论:
- 皮拉衍生物,特别是化系统,代表了癌症治疗开发中宝贵的一类化合物.
- 本次审查是首次全面汇编了pyrazine衍生物的生物活性,特别是它们的抗癌潜力.
- 这些发现预计将有助于药物化学家和药理学家在设计基于pyrazine的新型抗癌药物.
相关概念视频
Antipsychotic Drugs: Typical and Atypical Agents
263
Antipsychotic drugs are classified into first-generation (typical) drugs including phenothiazines; and second-generation (atypical) drugs. Chlorpromazine hydrochloride (Thorazine), a phenothiazine derivative, broadly impacts the central, autonomic, and endocrine systems. This drug, along with typical agents like haloperidol (Haldol), primarily works by antagonizing D2 receptors, thus reducing dopaminergic neurotransmission. However, typical antipsychotics can cause side effects such as sedation...
263
Basicity of Heterocyclic Aromatic Amines
6.1K
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).
6.1K
Chemotherapy-Induced Nausea and Vomiting: Dopamine Receptor Antagonists
356
Dopamine receptor antagonists, also known as antipsychotic agents, are critical in managing chemotherapy-induced vomiting. These antiemetic agents block dopamine receptors in the chemoreceptor trigger zone (CTZ), inhibiting signal transmission to the vomiting center. Antipsychotic agents encompass phenothiazines (PTZ), butyrophenones, benzamides, and thienobenzodiazepines (Zyprexa), which are utilized for their antiemetic and sedative properties.
Phenothiazines, such as prochlorperazine...
Phenothiazines, such as prochlorperazine...
356
Sedatives and Hypnotics Drugs: Miscellaneous Agents
205
Sedatives and hypnotics encompass a wide range of substances, each with its unique mechanism of action, uses, and potential adverse effects.
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
Melatonin congeners like ramelteon (Rozerem) and tasimelteon (Hetlioz) selectively bind to melatonin receptors (MT1 and MT2) and thus mimic the actions of melatonin, a hormone that regulates sleep-wake cycles. Tasimelteon is primarily used for non-24-hour sleep-wake disorder, common in blind patients. They are also used to treat conditions like insomnia...
205
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
3.0K
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...
3.0K
Adrenergic Agonists: Chemistry and Structure-Activity Relationship
3.1K
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...
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...
3.1K

