Synthesis and evaluation of 2-[2-(phenylthiomethyl)-1H-benzo[d] imidazol-1-yl)acetohydrazide derivatives as antitumor agents
摘要:
A novel class of acetylhydrazone derivatives (5a-x) containing 2-(phenylthiomethyl)-1H-benzo-[d]-imidazole moieties are synthesizer, and their antitumor activities against A549, HCT116, HepG2, PC-9, and A375 were determined by the MTT assay. Among them are N-(2,4-dihydroxybenzylidene)-2-(2-(phenylthiomethyl)-1H-benzo[d]-imidazol-1-yl)acetohydrazide (5a) and N-(5-bromo-2-hydroxy-benzylidene)-2-(2-(phenylthiomethyl)-1H-benzo[d]-imidazol-1-yl)acetohydrazide (5d) which displayed excellent cancer inhibitory activity against the tested cancer cells (IC50 4-17 mu M), compared with 5-FU and SU11248. The others have moderate to weak inhibitory activity against the tested cancer cell lines. (C) 2012 Elsevier Ltd. All rights reserved.
Synthesis of and characterization of some Heterocyclic Compounds derived from Thiophenol
作者:Shaima Ibraheem Chyad AL-Khazraji
DOI:10.21608/ejchem.2021.70759.3559
日期:2021.5.24
This research work involved preparation of heterogeneous pent lateral cyclic compounds (thiazolidine -4- one, benzothiazole, triazole, 4-oxothiazolidin) using thiophenol as raw materials: Thiophenol was reacted with mono chloroacetic acid in the presence of potassium hydroxide to prepare (sh1) followed by ortho amino aniline results the (sh2). The reaction of thiophenol with ethylchloroacetate afforded (sh3) and the reaction of (sh3) with thiosemicarbazide and 4% NaOH leads to ring closure giving 1,2,4- triazole (sh5). A treatment of thiophenol with hydrazine hydrate to obtain the intermediate (sh6) with aromatic aldehyde synthesized azomethines (sh7- sh9) then treated with mercaptoacetic acid to obtained (sh10-sh12). A treatment of thiophenol with chloroacetyl chloride produced (sh13) compound then treated with hydrazine hydrate to obtain (sh14) compound followed by bromobenzaldehyde synthesized azomethine (sh15) compound then treated with mercaptoacetic acid to obtained (sh16) compound. Characterization results for the prepared compounds using IR spectroscopy, NMR and melting points confirmed their chemical structures.
Boric Acid-Catalyzed Direct Condensation of Carboxylic Acids with Benzene-1,2-diamine into Benzimidazoles
作者:Nenad Maraš、Marijan Kočevar
DOI:10.1002/hlca.201100064
日期:2011.10
applicability of boric acid catalysis for the direct condensation of carboxylicacids with benzene‐1,2‐diamine to give 2‐substituted benzimidazoles was investigated. It was found that catalytic amounts (5–10 mol‐%) of boric acid efficiently promote the cyclocondensation of aliphatic carboxylicacids in refluxing toluene. In addition, the relatively neutral conditions allow the use of acid‐sensitive substrates
The toxicity of organic sulphides to the eggs and larvae of the glasshouse red spider mite. vii.—Benzyl phenyl sulphides (α-substituted)
作者:J. E. Cranham、D. Greenwood、H. A. Stevenson
DOI:10.1002/jsfa.2740090305
日期:1958.3
The synthesis of a number of benzylphenylsulphides, substituted in the α-position of the benzyl moiety, is described and their toxicities to the eggs and young mites of the glasshouseredspider (Tetranychus telarius L.) are tabulated.
benzothiazole ring system enhanced the antimicrobial activity against Staphylococcus aureus. In these sets of non-nucleoside fused heterocyclic compounds electron withdrawing groups at position 5 of the benzazoles increased the activity against C. albicans.
A new method for the conversion of trichloromethyl compounds into the corresponding phenylthiomethyl derivatives by reaction with sodium thiophenolate in the presence of thiophenol is described. This transformation proceeds at room temperature in high yield and has been applied to a variety of trichloromethyl compounds.