通过多元组件反应来获得新的抗等离子体化合物的硫素衍生物化
Angela Trejo1, Yunuen Avalos-Padilla2, Concepción Alonso1
1Departamento de Química Orgánica I, Facultad de Farmacia and Centro de Investigación Lascaray (Lascaray Research Center), Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU), Paseo de la Universidad 7, 01006 Vitoria-Gasteiz, Spain.
Bioorganic & medicinal chemistry
|July 22, 2025
概括
研究人员修改了抗疟疾药物硫黄素,以对抗耐药性. 新衍生品显示出更高的抗 плазмо性活性和与甲胺的协同效应,提供了潜在的新疟疾治疗方法.
科学领域:
- 药用化学 医学化学
- 寄生虫学的寄生虫学
- 药物发现 药物发现 药物发现
背景情况:
- 疟疾仍然是一个重大的全球卫生挑战,耐药性使治疗复杂化.
- 开发新的抗疟疾药物至关重要,但药物发现过程复杂且漫长.
- 现有药物的化学修饰提供了克服耐药性的策略.
研究的目的:
- 为了结构性地修改抗疟疾药物硫黄素,以克服寄生虫的抗性.
- 通过波瓦罗夫和乌吉多元组分反应合成新型硫二衍生物.
- 评估新衍生物体的体外抗等离子体活性和协同作用潜力.
主要方法:
- 硫素是化学适应使用Povarov反应与乙烯和印烯.
- 硫素在Ugi反应中被用于产生新的化学实体.
- 合成的衍生品在体外对疟疾寄生虫 (Plasmodium falciparum) 的活性进行了测试.
- 对有前途的衍生品的协同效应在与甲胺相结合时进行了评估.
主要成果:
- 成功合成了新型的基诺林-6-硫胺和基诺[2,1-c]基诺林-2-硫胺衍生物.
- 与硫黄素相比,8a,13a和13b衍生物在体外显著增强了抗质活性.
- 这些衍生物在与甲结合时显示出更好的疗效,超过了标准的硫黄素-甲组合.
结论:
- 硫素的化学修饰可以产生强大的抗疟疾化合物.
- 合成的衍生品代表了疟疾治疗的有希望的候选人,特别是在打击耐药性方面.
- 对这些新型化合物的进一步研究可能会导致改善疟疾治疗方法.
相关概念视频
Drug Metabolism: Phase II Reactions
4.1K
Phase II reactions are essential for the detoxification and elimination of drugs from the body. These reactions involve the conjugation of parent drugs or their phase I metabolites with endogenous molecules, resulting in more hydrophilic drug conjugates. The primary conjugation reactions in this phase are sulfation and glucuronidation. Both sulfation and glucuronidation typically produce biologically inactive metabolites. However, in some cases involving prodrugs, active metabolites may be...
4.1K
Phase II Reactions: Sulfation and Conjugation with α-Amino Acids
433
Sulfation and α-amino acid conjugation are two critical biotransformation reactions in drug metabolism. Sulfation, a phase II biotransformation reaction, involves adding a polar sulfate group to a drug, enhancing its water solubility and promoting excretion. This process can either co-occur with or occur independently of glucuronidation. Nonmicrosomal sulfotransferase enzymes catalyze the process. The reaction involves 3'-phosphoadenosine-5'-phosphosulfate or PAPS coenzyme...
433
Aryldiazonium Salts to Azo Dyes: Diazo Coupling
3.1K
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...
3.1K
Preparation and Reactions of Sulfides
5.1K
Sulfides are the sulfur analog of ethers, just as thiols are the sulfur analog of alcohol. Like ethers, sulfides also consist of two hydrocarbon groups bonded to the central sulfur atom. Depending upon the type of groups present, sulfides can be symmetrical or asymmetrical. Symmetrical sulfides can be prepared via an SN2 reaction between 2 equivalents of an alkyl halide and one equivalent of sodium sulfide.
5.1K
Phase II Reactions: Miscellaneous Conjugation Reactions
112
Phase II biotransformations are detoxification mechanisms that conjugate xenobiotics with endogenous substances, neutralizing their toxicity.
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
A key example involves the conjugation of cyanide ions, which impair cellular respiration and alter hemoglobin into non-oxygen-carrying cyanmethemoglobin. To neutralize this threat, a sulfur atom from thiosulphate is transferred to the cyanide ion, catalyzed by the enzyme rhodanese, resulting in an inactive compound called thiocyanate. The production of...
112
Phase II Reactions: Glucuronidation
804
Glucuronidation, a pivotal phase II biotransformation process, involves the coupling of glucuronic acid to a drug or xenobiotic. Given its widespread occurrence and critical role in drug metabolism, it's considered the most crucial phase II reaction. It enhances the water solubility of substances, aiding their expulsion from the body. The driving force behind these reactions is a group of enzymes known as UDP-glucuronosyltransferases (UGTs). UGTs facilitate the transfer of a glucuronic acid...
804


