Novel cyclohepta[b]thiophene derivative incorporating pyrimidine, pyridine, and chromene moiety as potential antimicrobial agents targeting DNA gyrase
作者:Eman A. Fayed、Marwa Mohsen、Shimaa M. Abd El-Gilil、Dina S. Aboul-Magd、Ahmed Ragab
DOI:10.1016/j.molstruc.2022.133028
日期:2022.8
cultivate novel and effectual antimicrobialagents, we present the triumphant synthesis of a novel class of cyclohepta-thieno-pyrimidins 4-8, cyclohepta[b]thiophene appended 2-imino-2H-chromene-3-carboxamide and 3-imino-3H-benzo[f]chromene-2-carboxamide derivatives 9-11 molecules, to enrich their biological behavior. The desired molecules had undergone in-vitro appraisal for their antimicrobial activity
耐药微生物的出现是全球高发病率和高死亡率的原因。在我们努力培育新型和有效的抗菌剂的过程中,我们成功地合成了一类新型环庚-噻吩并嘧啶4-8、环庚[ b ]噻吩附加的 2-亚氨基-2 H-色烯-3-甲酰胺和 3 -imino-3 H -benzo[ f ]chromene-2-carboxamide 衍生物9-11分子,以丰富其生物学行为。所需分子已在体外进行对其抗菌活性的评估,显示出令人鼓舞的结果。此外,评价了活性噻吩化合物的时间杀伤动力学、抗生物膜活性和DNA旋转酶抑制。与左氧氟沙星和环丙沙星相比,活性噻吩对 DNA 促旋酶的抑制作用也在 (5.3-18.7µM) 之间确定,IC 50值介于 (5.3-18.7µM) 之间。此外,分数抑制浓度指数 (ΣFICI) 的总和用于评估噻吩和左氧氟沙星之间的协同作用。此外,最活跃的噻吩衍生物的抗菌活性在ɣ -辐照后进行了分析。此外,在硅预测方法被考
Synthesis and Biological Evaluation of Thiophene Derivatives as Acetylcholinesterase Inhibitors
作者:Mohamed M. Ismail、Mona M. Kamel、Lamia W. Mohamed、Samar I. Faggal、Mai A. Galal
DOI:10.3390/molecules17067217
日期:——
A series of new thiophene derivatives has been synthesized using the Gewald protocol. The acetylcholinesterase inhibition activity was assayed according to Ellman’s method using donepezil as reference. Some of the compounds were found to be more potent inhibitors than the reference. 2-(2-(4-(4-Methoxyphenyl)piperazin-1-yl)acetamido)-4,5,6,7-tetrahydrobenzo[b]thiophene-3-carboxamide (IIId) showed 60% inhibition, compared to only 40% inhibition by donepezil.