通过微波辐射技术,将噻唑烷-2,4-二酮( 1 )与合适的醛( 2a – m )缩合,可以轻松制备新的( Z )-5-取代的2,4-噻唑烷二酮( 3a – m ) 。( Z )-5-取代的2,4-噻唑烷二酮与4-(溴甲基)苯甲酸之间的反应,使用碳酸钾作为碱,在回流的丙酮中,然后在酸性介质中进行后处理,得到4-(((( Z )- 5-取代的2,4-二氧噻唑烷-3-基)甲基)苯甲酸衍生物( 4a – m )。通过IR,1 H NMR,13 C NMR光谱研究和元素分析证实了新合成的化合物的结构。评价所有化合物的体外抗微生物和细胞毒性活性。抗菌和抗真菌结果表明,大多数化合物均显示出显着的活性,其中发现化合物 4c 和 4g 具有广谱抗菌和抗真菌特性,其MIC值范围为2-4和2-8μg/ ml,分别。在MTT细胞毒性研究中,发现化合物 4g 最有效。在HeLa,HT29,A549和MCF-7细胞中,观察到的IC
通过微波辐射技术,将噻唑烷-2,4-二酮( 1 )与合适的醛( 2a – m )缩合,可以轻松制备新的( Z )-5-取代的2,4-噻唑烷二酮( 3a – m ) 。( Z )-5-取代的2,4-噻唑烷二酮与4-(溴甲基)苯甲酸之间的反应,使用碳酸钾作为碱,在回流的丙酮中,然后在酸性介质中进行后处理,得到4-(((( Z )- 5-取代的2,4-二氧噻唑烷-3-基)甲基)苯甲酸衍生物( 4a – m )。通过IR,1 H NMR,13 C NMR光谱研究和元素分析证实了新合成的化合物的结构。评价所有化合物的体外抗微生物和细胞毒性活性。抗菌和抗真菌结果表明,大多数化合物均显示出显着的活性,其中发现化合物 4c 和 4g 具有广谱抗菌和抗真菌特性,其MIC值范围为2-4和2-8μg/ ml,分别。在MTT细胞毒性研究中,发现化合物 4g 最有效。在HeLa,HT29,A549和MCF-7细胞中,观察到的IC
Diverse 3-Methylthio-4-Substituted Maleimides through a Novel Rearrangement Reaction: Synthesis and Selective Cell Imaging
作者:Luan V. Meirelles、Pedro P. de Castro、Saulo T. A. Passos、Bernardo B. P. P. Carvalho、Chris H. J. Franco、José R. Correa、Brenno A. D. Neto、Giovanni W. Amarante
DOI:10.1021/acs.joc.1c02714
日期:2022.3.4
metal-free protocol for the preparation of fluorescent and non-fluoresent 3-methylthio-4-arylmaleimides in a single step through a new rearrangement from thiazolidine-2,4-diones is described. By employing the optimized reaction conditions, a broad scope of derivatives was prepared in ≤97% yield. The reaction tolerated several substituted aryl groups, including the challenging preparation of pyridyl-containing
Disclosed are novel compounds of Formula I that are cGAS antagonists, methods of preparation of the compounds, pharmaceutical compositions comprising the compounds, and their use in medical therapy.
所公开的是作为 cGAS 拮抗剂的新型式 I 化合物、该化合物的制备方法、包含该化合物的药物组合物及其在医学治疗中的用途。
Tau-Centric Multitarget Approach for Alzheimer’s Disease: Development of First-in-Class Dual Glycogen Synthase Kinase 3β and Tau-Aggregation Inhibitors
Several findings propose the altered tau protein network as an important target for Alzheimer's disease (AD). Particularly, two points of pharmacological intervention can be envisaged: inhibition of phosphorylating tau kinase GSK-3 beta and tau aggregation process. On the basis of this consideration and on our interest in multitarget paradigms in AD, we report on the discovery of 2,4-thiazolidinedione derivatives endowed with such a profile. 28 and 30 displayed micromolar IC50 values toward GSK-3 beta, together with the capacity of inhibiting AcPHF6 aggregation of 60% and 80% at 10 ktM, respectively. In addition, they showed PAMPA-BBB permeability, together with a suitable cellular safety profile. 30 also displayed inhibition of both K18 and full-length tau aggregations. Finally, both compounds were able to improve cell viability in an okadaic acid-induced neurodegeneration cell model. To the best of our knowledge, 28 and 30 are the first balanced, nontoxic, dual-acting compounds hitting tau cascade at two different hubs.