1415020-45-9Relevant academic research and scientific papers
Design, synthesis and evaluation of dihydrotriazine derivatives-bearing 5-aryloxypyrazole moieties as antibacterial agents
Zhang, Tian-Yi,Li, Chun-Shi,Cui, Ming-Yue,Bai, Xue-Qian,Chen, Jiang-Hui,Song, Ze-Wen,Feng, Bo,Liu, Xue-Kun
, p. 861 - 876 (2021)
Abstract: In the present investigation, a series of dihydrotriazine derivatives-bearing 5-aryloxypyrazole moieties were synthesized and their structures were confirmed by different spectral tools. The biological evaluation in vitro revealed that some of the target compounds exerted good antibacterial and antifungal activity in comparison with the reference drugs. Among these novel hybrids, compound 10d showed the most potent activity with minimum inhibitory concentration values (MIC) of 0.5?μg/mL against S. aureus 4220, MRSA 3506 and E. coli 1924 strain. The cytotoxic activity of the compounds 6d, 6m, 10d and 10g was assessed in MCF-7 and HeLa cells. Growth kinetics study showed significant inhibition of bacterial growth when treated with different conc. of 10d. In vitro enzyme study implied that compound 10d exerted its antibacterial activity through DHFR inhibition. Moreover, significant inhibition of biofilm formation was observed in bacterial cells treated with MIC conc. of 10d as visualized by SEM micrographs. Graphic abstract: Twenty-nine target compounds were designed, synthesized and evaluated in terms of their antibacterial and antifungal activities.[Figure not available: see fulltext.].
Green synthesis and pharmacological screening of polyhydroquinoline derivatives bearing a fluorinated 5-aryloxypyrazole nucleus
Karad, Sharad C.,Purohit, Vishal B.,Raval, Dipak K.,Kalaria, Piyush N.,Avalani, Jemin R.,Thakor, Parth,Thakkar, Vasudev R.
, p. 16000 - 16009 (2015/03/04)
A novel series of polyhydroquinoline scaffolds 8a-p has been designed and synthesized under ultrasonic irradiation by a one-pot three-component cyclocondensation reaction of 3-methyl-5-substituted aryloxy-1-phenyl-1H-pyrazole-4-carbaldehydes 3a-d with malononitrile 7 and various enhydrazinoketones 6a-e in the presence of piperidine as basic catalyst. All the synthesized compounds have been characterized by various spectroscopic techniques and elemental analysis. All the synthesized compounds were evaluated for their in vitro antibacterial activity against a panel of pathogenic strains of bacteria and fungi, in vitro antitubercular activity against Mycobacterium tuberculosis H37Rv strain and also for their in vitro antimalarial activity against Plasmodium falciparum. Compounds 8c, 8i, 8j, 8l and 8m exhibited excellent antimalarial potency. The cytotoxicity of the synthesized compounds was tested using a bioassay of S. pombe cells at the cellular level. Compounds 8i, 8j, 8k and 8l were found to have maximum toxicity, while compounds 8e, 8m, 8c were found to be less cytotoxic. Some of them displayed luminous antibacterial activity and reasonable antituberculosis activity as compared with the first line drugs.
Design, synthesis and characterization of fluoro substituted novel pyrazolylpyrazolines scaffold and their pharmacological screening
Karad, Sharad C.,Purohit, Vishal B.,Raval, Dipak K.
, p. 51 - 58 (2014/07/22)
A novel series of fluoro substituted pyrazolylpyrazolines 7a-l was synthesized in good to excellent yield (77-88%) from pyrazole chalcones 5a-d and substituted phenyl hydrazine hydrochlorides 6a-c under microwave irradiation. The newly synthesized compounds were screened for their preliminary in vitro antibacterial activity against a panel of pathogenic stains of bacteria and fungi, antituberculosis activity against Mycobacterium tuberculosis H37Rv and antimalarial activity against Plasmodium falciparum. Compounds 7a, 7b, 7g, 7h, 7j and 7k displayed excellent activity against P. falciparum stain as compared to quinine IC50 0.268. Good antitubercular activity was exhibited by compounds 7a, 7e, 7h and 7k. Some of them also exhibited superior antibacterial activity as compared to the first line drugs.
Synthesis and antibacterial evaluation of rhodanine-based 5-aryloxy pyrazoles against selected methicillin resistant and quinolone-resistant Staphylococcus aureus (MRSA and QRSA)
Song, Ming-Xia,Zheng, Chang-Ji,Deng, Xian-Qing,Sun, Liang-Peng,Wu, Yan,Hong, Lan,Li, Ying-Jing,Liu, Yi,Wei, Zhi-Yu,Jin, Ming-Jun,Piao, Hu-Ri
, p. 376 - 385 (2013/03/28)
With an intention to synergize the anti-bacterial activity of 5-aryloxy pyrazole and rhodanine derivatives, eight series of hybrid compounds have been synthesized and evaluated for their antibacterial activity. The majority of the synthesized compounds showed good inhibitory activity against selected methicillin resistant and quinolone-resistant Staphylococcus aureus (MRSA, QRSA) with minimum inhibitory concentration (MIC) values in the range of 1-32 μg/mL. The cytotoxicity test suggests that these compounds exhibited in vitro antibacterial activity at non-cytotoxic concentrations. These studies therefore suggest that rhodanine-based 5-aryloxy pyrazoles are interesting scaffolds for the development of novel Gram-positive antibacterial agents.
Synthesis and biological evaluation of 5-aryloxypyrazole derivatives bearing a rhodanine-3-aromatic acid as potential antimicrobial agents
Zheng, Chang-Ji,Song, Ming-Xia,Sun, Liang-Peng,Wu, Yan,Hong, Lan,Piao, Hu-Ri
, p. 7024 - 7028 (2013/01/15)
Three novel series of 5-aryloxypyrazole derivatives have been synthesized and tested for their antibacterial activity. The majority of the synthesized compounds showed potent inhibitory activity against Gram-positive bacteria Staphylococcus aureus 4220, especially against the strains of multidrug-resistant clinical isolates (MRSA3167/3506 and QRSA3505/3519). Among which compounds IIIb, IIIg and IIIm showed the most potent levels of activity (MIC = 1 μg/mL) against the multidrug-resistant strains. And cytotoxic activity assay showed that the compounds tested did not affect cell viability on the Human cervical (HeLa) cells at their MICs. The current study therefore suggests that 5-aryloxypyrazoles bearing a rhodanine-3-aromatic acid moiety are promising scaffolds for the development of novel Gram-positive antibacterial agents.
