hydrazinyl]-4-(4-fluorophenyl)thiazole (7) exhibited notable antimicrobial activity against Enterococcus faecalis (ATCC 51922), Pseudomonas aeruginosa, Escherichia coli (ATCC 35218), Candida krusei, Candida glabrata and Candida parapsilosis. Due to its promising antimicrobial activity, the mutagenic potential of compound 7 was also evaluated by means of Ames test. According to MTT and AMES assays, this compound was
Synthesis and DNA binding of novel bioactive thiazole derivatives pendent to N-phenylmorpholine moiety
作者:Thoraya A. Farghaly、Alaa M. Abo Alnaja、Hoda A. El-Ghamry、Mohamed R. Shaaban
DOI:10.1016/j.bioorg.2020.104103
日期:2020.9
An easyaccess to a series of N-phenylmorpholine derivatives linked with thiazole or formazan moieties were achieved using simple experimental procedure under conventional and microwaves irradiation conditions. The reaction of 2-(N-phenylmorpholine)ethylidene)hydrazine-1-carbothioamide derivatives and [1-(4-morpholin-4-yl-phenyl)-ethylidene]-hydrazine with a variety of hydrazonoyl chlorides or phenacyl
Fluorinated hydrazonoyl chlorides as precursors for synthesis of antimicrobial azoles
作者:Sami A. Al‐Hussain、Fatimah Alshehrei、Magdi E. A. Zaki、Marwa F. Harras、Thoraya A. Farghaly、Zeinab A. Muhammad
DOI:10.1002/jhet.4198
日期:2021.2
to afford wide range of bioactive heterocyclic systems as thiazoles and imidazopyrazoles. This research work focused on the synthesis of two new fluorinated hydrazonoyl chlorides and used them in synthesis of novel series of thiazole derivatives and two imidazopyrazole systems. The mechanistic pathways and the structures of all synthesized derivatives were discussed and assured based on the available
Synthesis and Structure−Activity Relationship Study of Potent Trypanocidal Thio Semicarbazone Inhibitors of the Trypanosomal Cysteine Protease Cruzain
作者:Xiaohui Du、Chun Guo、Elizabeth Hansell、Patricia S. Doyle、Conor R. Caffrey、Tod P. Holler、James H. McKerrow、Fred E. Cohen
DOI:10.1021/jm010459j
日期:2002.6.1
American trypanosomiasis, or Chagas' disease, is the leading cause of heart disease in Latin America. Currently there is an urgent need to develop antitrypanosomal therapy due to the toxicity of existing agents and emerging drug resistance. A novel series of potent thio semicarbazone small-molecule inhibitors of the Trypanosoma cruzi cysteine protease cruzain have been identified. Some of these inhibitors have been shown to be trypanocidal. We initially discovered that X-bromopropiophenone thio semicarbazone (1i) inhibited cruzain and could cure mammalian cell cultures infected with T cruzi. 3'-Bromopropiophenone thio semicarbazone showed no toxicity for mammalian cells at concentrations that were trypanocidal. Following this lead, more than 100 compounds were designed and synthesized. A specific structure-activity relationship (SAR) was established, and many potent analogues with IC50 values in the low nanomolar range were identified. Eight additional analogues were trypanocidal in a cell culture assay, and this indicates that aryl thio semicarbazone is a productive scaffold for killing the parasites. Kinetic studies show that these are time-dependent inhibitors. Molecular modeling studies of the enzyme-inhibitor complex have led to a proposed mechanism of interaction as well as insight into the SAR of the thio semicarbazone series. The nonpeptide nature of this series, small size, and extremely low cost of production suggest this is a promising direction for the development of new antitrypanosome chemotherapy.
Synthesis of Thiazolyl-N-phenylmorpholine Derivatives and their Biological Activities
作者:Amerah M. Al-Soliemy、Thoraya A. Farghaly、Eman M.H. Abbas、Mohamed R. Shaaban、Mohie E.M. Zayed、Tarek B.A. El-Naggar
DOI:10.2174/1573406416666200517103435
日期:2021.8
the new derivatives. The antitumor activities of synthesized N-phenylmorpholine-thiazole derivatives were investigated against three tumor cells namely, TK-10, MCF-7 and UACC-62. The results of such investigation indicated that some derivatives showed good potential to inhibit the growth of the two cells of the tested tumor cells. One of the tested compounds, N-ethyl thiosemicarbazone derivative 7 revealed
背景:吗啉和噻唑环是众所周知的两种杂环,具有广泛的不同生物活性,尤其是抗肿瘤活性。 目的:本工作的目的是通过吗啉-缩氨基硫脲衍生物与各种α-卤代羰基化合物的反应设计和合成吗啉和噻唑部分的杂化杂环化合物,并筛选它们对三种肿瘤细胞系的抗肿瘤活性,即TK-10、 MCF-7 和 UACC-62。 方法:完成了一系列与噻唑部分相连的N-苯基吗啉衍生物的有效合成。N-取代的-2-(N-苯基吗啉)亚乙基)肼-1-碳硫酰胺(缩氨基硫脲衍生物)与乙酰基和酯-腙酰氯、α-氯酮或α-溴酯的反应得到相应的悬垂于N-的噻唑衍生物苯基吗啉部分的产率很好。 结果:质量、1 H NMR、13 C NMR和元素分析用于确认所有新衍生物的结构。研究了合成的 N-苯基吗啉-噻唑衍生物对三种肿瘤细胞即 TK-10、MCF-7 和 UACC-62 的抗肿瘤活性。此类研究的结果表明,一些衍生物显示出良好的抑制受试肿瘤细胞两种细胞生长的潜力。其中一种测试化合物