Sortase A 抑制是通过影响控制生物膜形成、宿主细胞进入、免疫反应的逃避和抑制以及必需营养素获取的许多关键过程来降低细菌毒力的成熟策略。对已知充当分选酶 A 抑制剂的结构的荟萃分析为识别新的潜在支架提供了起点。基于该模板,合成了一系列新的潜在分选酶 A 抑制剂,其中包含 2-苯基噻唑部分。物理化学表征证实了所提出结构的身份。抗菌活性评估表明,新化合物对细菌细胞活力的活性降低。然而,这些化合物在非常低的浓度下可防止生物膜形成,尤其是在粪肠球菌的情况下。
bisthiazole derivatives represent a prevalent scaffold in the antimicrobial drug discovery. Therefore, we have decided to synthesize somenew series of 4,5′‐bisthiazoles. A total of 17 compounds were synthesized, their structural elucidation being based on elemental analysis (C,H,N,S) and spectroscopic data (MS and 1H NMR). Their in vitro antimicrobial activities were assessed against several Gram‐positive
噻唑和联噻唑衍生物代表了抗菌药物发现中的普遍支架。因此,我们决定合成一些新的4,5'-双噻唑系列。总共合成了17种化合物,其结构解析基于元素分析(C,H,N,S)和光谱数据(MS和1 H NMR)。使用分光光度法评估了它们对几种革兰氏阳性和革兰氏阴性细菌菌株以及一种真菌菌株(白色念珠菌)的体外抗菌活性。一些化合物对革兰氏阴性大肠杆菌,鼠伤寒沙门氏菌和革兰氏阳性菌表现出中等至良好的抗菌活性。金黄色葡萄球菌和蜡状芽孢杆菌菌株。所有合成的化合物对白念珠菌均具有中度到很好的抑菌活性。
Visible-light-induced C–S bond formation in the synthesis of 2,4-disubstituted thiazoles through cascade difunctionalization of acetophenone: a greener approach
A novel approach for the synthesis of 2,4-disubstituted thiazoles from methyl aryl ketones, N-bromo-succinimide (NBS), and thioamide in water as a green reaction medium through visible-light irradiation is reported.
Brønsted acid-promoted thiazole synthesis under metal-free conditions using sulfur powder as the sulfur source
作者:Penghui Ni、Jing Tan、Rong Li、Huawen Huang、Feng Zhang、Guo-Jun Deng
DOI:10.1039/c9ra09656f
日期:——
acid-promoted sulfuration/annulation reaction for the one-pot synthesis of bis-substituted thiazoles from benzylamines, acetophenones, and sulfur powder has been developed. One C–N bond and multi C–S bonds were selectively formed in one pot. The choice of the Brønsted acid was the key to the high efficiency of this transformation under metal-free conditions.
inhibitors provided the starting point for identifying a newpotential scaffold. Based on this template a series of newpotential Sortase A inhibitors, that contain the 2-phenylthiazole moiety, were synthesized. The physicochemical characterisation confirmed the identity of the proposed structures. Antibacterial activity evaluation showed that the new compounds have a reduced activity against bacterial
Sortase A 抑制是通过影响控制生物膜形成、宿主细胞进入、免疫反应的逃避和抑制以及必需营养素获取的许多关键过程来降低细菌毒力的成熟策略。对已知充当分选酶 A 抑制剂的结构的荟萃分析为识别新的潜在支架提供了起点。基于该模板,合成了一系列新的潜在分选酶 A 抑制剂,其中包含 2-苯基噻唑部分。物理化学表征证实了所提出结构的身份。抗菌活性评估表明,新化合物对细菌细胞活力的活性降低。然而,这些化合物在非常低的浓度下可防止生物膜形成,尤其是在粪肠球菌的情况下。