Two synthetic approaches to enaminones fused to 1,4-benzothiazin-2-one moiety, which can be interesting in studies on biological activity, chemosensors, and fluorescence, were developed via the reaction of furan-2,3-diones or acylpyruvic acids in the presence of carbodiimides with o-aminothiophenols. The target enaminones were formed together with pharmaceutically interesting 2-hydroxy-2H-1,4-benzothiazin-3(4H)-ones. A selective synthetic approach to 2-hydroxy-2H-1,4-benzothiazin-3(4H)-ones was developed via the solvent-switchable reaction of furan-2,3-diones with o-aminothiophenol. Preliminary biological assays (antimicrobial, acute toxicity) of the new compounds were carried out.
通过呋喃-2,3-二酮或酰基丙酮酸在碳化二亚胺存在下与邻氨基苯硫酚的反应,我们开发了两种合成融合了 1,4-苯并噻嗪-2-酮分子的烯酰胺酮的方法,这些烯酰胺酮在生物活性、化学传感器和荧光研究方面具有重要意义。目标烯酮与具有药学意义的 2-羟基-2H-1,4-苯并噻嗪-3(4H)-酮一起形成。通过呋喃-2,3-二酮与邻氨基苯硫酚的溶剂切换反应,开发了一种 2-羟基-2H-1,4-苯并噻嗪-3(4H)-酮的选择性合成方法。对新化合物进行了初步的生物检测(抗菌、急性毒性)。