Synthesis, antibacterial, and antifungal activities of biolabile (E)-1-(4-morpholinophenyl)-3-aryl-prop-2-en-1-ones

Investigation of 1-(4-morpholinophenyl)-3-(4-fluorophenyl)-propenone and 1-(4-morpholinophenyl)-3-(3-fluorophenyl)-propenone as new apoptosis inducers on Spodoptera frugiperda (Sf9) cells

The objective of this study was to examine the toxicity of 1-(4-morpholinophenyl)-3-(4-fluorophenyl)-propenone (A) and 1-(4-morpholinophenyl)-3-(3-fluorophenyl)-propenone (B) on Spodoptera frugiperda (Sf9) cells and the mechanism of the toxicity. By cell-based thiazolyl blue tetrazolium bromide (MTT) assay, we found that the IC(50) were 35.45 μM for A and 31.97 μM for B respectively. Formation of apoptotic bodies was observed at 24 h in the treated cells. There was a significant increase of DNA ladders in the treated Sf9 cells compared to controls. In the presence of 50 μM compound A and B for 24 h, ATP content of Sf9 cells reduced by approximately 50%. Compared to the controls, the significant over-expression of caspase-3 in treated cells was measured by caspase-3 activity kit, and the loss of mitochondrial membrane potential (ΔΨm) was detected in apoptosis cells. The results suggested that the two compounds could be identified as new potent cell apoptosis inducers.

In vitro microbiological evaluation of 1,1'-(5,5'-(1,4-phenylene)bis(3-aryl-1H-pyrazole-5,1-(4H,5H)-diyl))diethanones, novel bisacetylated pyrazoles

Novel 1,1'-(5,5'-(1,4-phenylene)bis(3-aryl-1H-pyrazole-5,1-(4H,5H)-diyl))diethanones 7-12 were tested for their antimicrobial activity by disc diffusion and twofold serial dilution method against the tested bacterial and fungal strains. Compounds 7 against Micrococcus luteus, 8 against β-Heamolytic streptococcus, M. luteus, Klebsiella pneumonia, Microsporum gypseum, 9 against Staphylococcus aureus, Shigella flexneri, Vibreo cholerae, Pseudomonas aeruginosa, Aspergillus flavus, Mucor indicus, 10 against Salmonella typhii, S. flexneri, M. gypseum, 11 against K. pneumonia, M. gypseum, 12 against K. pneumonia, and M. gypseum show superior zone of inhibitions and exhibited excellent antibacterial and antifungal activities at a MIC value of 6.25 μg/mL. Moreover, all the tested compounds 7-12 revealed promising antitubercular activity against Mycobacterium tuberculosis H37Rv and INH-resistant M. tuberculosis. Compounds 8 against M. tuberculosis and 11 against INH-resistant M. tuberculosis exhibited the percentage of reduction in RLU at 89 and 85%, respectively.

'One-pot' ultrasound irradiation promoted synthesis and spectral characterization of an array of novel 1,1'-(5,5'-(1,4-phenylene)bis(3-aryl-1H-pyrazole-5,1(4H,5H)-diyl))diethanones, a bis acetylated pyrazoles derivatives

An array of novel 1,1'-(5,5'-(1,4-phenylene)bis(3-aryl-1H-pyrazole-5,1(4H,5H)-diyl))diethanones, a bis acetylated pyrazoles derivatives are synthesized in 'one-pot' by ultrasound irradiation method and are characterized by melting point, elemental analysis, MS, FT-IR, one-dimensional NMR (1H and 13C) and two-dimensional NOESY spectra. The methylene and methane protons of pyrazoles moiety splits signal as ABX pattern in the proton NMR spectra and the key nOe correlations are confirmed by NOESY spectrum.