Synthesis and Anticancer Activity of Bis-(N-Glucosylated Triazolothiadiazolyl) Alkanes via Cyclocondensation Reaction Involving C–s and C–n Bond formation
摘要:
A series of bis-(4-amino-5-mercapto-1,2,4-triazol-3-yl) alkanes have been synthesized and were condensed with N-tetra-O-acetyl--D-glucopyranosyl isocyanodichloride to afford biologically active bis-[6-tetra-O-acetyl--D-glucopyranosylimino-1,2,4-triazolo[3,4-b]-1,3,4-thiadiazol-4-yl] alkanes. The structures of the new glucosylated heterocyclic compounds have been established by IR, H-1 NMR, and C-13 NMR spectroscopy, and mass spectrometry analyses. Among the synthesized compounds, a few target compounds were screened for their in vitroanticancer activity against two human cancer cell lines, viz. MCF-7 (Breast) and HEPG2 (Liver).
2-Bromo-1-(1H-pyrazol-4-yl)ethanone: versatile precursors for novel mono-, bis- and poly{6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines}
作者:Mostafa E. Salem、Ahmed F. Darweesh、Ahmad M. Farag、Ahmed H.M. Elwahy
DOI:10.1016/j.tet.2015.12.024
日期:2016.2
A simple synthesis of novel mono-, bis- and poly6-(1H-pyrazol-4-yl)-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazines} is reported. The formation of the target compounds was achieved by the reaction of 2-bromo-1-(5-methyl-1-phenyl-1H-pyrazol-4-yl)ethanone with the appropriate aminotriazolethiol or by the reaction of 6-pyrazolyl-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazine-3-thiol with the appropriate di- and
新型单,双和聚6-(1 H-吡唑-4-基)-[1,2,4]三唑[3,4- b ] [1,3,4]噻二嗪的简单合成被报道。通过2-溴-1-(5-甲基-1-苯基-1 H-吡唑-4-基)乙酮与适当的氨基三唑硫醇的反应或6-吡唑基-的反应实现目标化合物的形成。7 H- [1,2,4]三唑并[3,4- b ] [1,3,4]噻二嗪-3-硫醇与适当的二-和聚(溴)化合物。通过光谱和元素分析确定了新合成化合物的结构。
Synthesis of novel scaffolds based on thiazole or triazolothiadiazine linked to benzofuran or benzo[<i>d</i>]thiazole moieties as new hybrid molecules
作者:Mostafa E. Salem、Ahmed F. Darweesh、Ahmed H. M. Elwahy
DOI:10.1080/00397911.2019.1694689
日期:2020.1.17
Abstract A synthesis of novel hybrid molecules containing thiazole or bis(thiazoles) each bearing benzofuran and/or benzo[d]thiazolemoieties by the reaction of the appropriate thioamide derivatives with the corresponding bis-bromoacetyl derivatives is reported. Mono- and bis(triazolothiadiazine) derivatives based on benzofuran or benzo[d]thiazolemoieties were also synthesized in good yields by the
A series of bis-[4-amino-5-mercapto-1,2,4-triazol-3-yl] alkanes have been synthesized and were converted into bis-[1,2,4-triazolo[3,4-b]-1,3,4-thiadiazol-4-yl] alkanes. The newly synthesized compounds were characterized by analytical IR, NMR and mass spectral studies. Some of the newly synthesized compounds were screened for their antibacterial properties and exhibited activity with MIC in the range 3-12.5 micrograms/ml.
Antimicrobial and DNA-Cleavage Studies of 22-Membered N<sub>4</sub>Tetraaza Macrocyclic Triazoles: Template Synthesis and Physicochemical Characterization
作者:Sangamesh A. Patil、Udaykumar V. Kamble、Prema S. Badami
DOI:10.1080/15257770.2010.504600
日期:2010.8.13
A novel series of 22-membered macrocyclic complexes of the type [MLCl2] (M=Co2+, Ni2+ and Cu2+) have been synthesized with newly derived biologically active ligands (L1-LIV). These ligands were synthesized by the condensation of ortho-phthalaldehyde and bis-(4-amino-5-mercapto-1, 2, 4-triazole-3-yl)alkanes. The mode of bonding and overall geometry of the complexes have been inferred through IR, EPR, electronic spectral studies, conductivity, magnetic, thermal, and electrochemical studies. All these complexes have been screened for their antibacterial (Escherichia coli, Staphylococus aureus, Salmonella typhi, Pseudomonas aeruginosa) and antifungal activities (Aspergillus niger, Aspergillus flavus, and Cladosporium) by the minimal inhibitory concentration (MIC) method. The DNA cleavage study was done by agarose gel electrophoresis technique.