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Synthesis, DNA binding and in-vitro cytotoxicity studies on novel bis-pyrazoles
Indrasena Reddy K, Aruna C, Manisha M, , Sudhakar Babu K, , Priya R, Amrita A, ,
Published in Elsevier BV
2017
PMID: 28189845
Volume: 168
   
Pages: 89 - 97
Abstract
A new series of bis-pyrazoles 6a-t were synthesized from 3,5-dimethyl pyrazole using sequential approach. All these compounds were characterized by IR, 1H NMR, 13C NMR and mass spectral data. The interaction of newly synthesized bis-pyrazoles with DNA was investigated through molecular docking and absorption spectroscopic technique. Among all bis-pyrazoles compounds, the 6h compound showed lower conformational energy through in silico analysis. The interaction of each molecule in this series 6a-t with the various concentrations of DNA was examined through the UV–visible spectroscopic studies. The UV–visible spectroscopy studies on the specific binding of compound 6a, 6b, 6g, 6h, 6d, 6i, 6k, 6n, 6s with DNA have exhibited spectral shifts and the results were discussed. In further the compounds 6a-t were subjected to the in-vitro cytotoxicity studies against human pancreatic adenocarcinoma, human non-small cell lung carcinoma cell lines. Among the screened compounds, N-(3-isopropoxy-1-isopropyl-4-(3,5-dimethyl-1H-pyrazol-1-yl)-1H-pyrazol-5-yl)cyclobutane carboxamide and N-(5′-Isopropoxy-2′-isopropyl-3,5-dimethyl-2′H-[1,4′] bipyrazolyl-3′-yl)-dimethane sulfonamide were found as lead molecules since they have exhibited promising activity against both the cancer cell lines used in this study, whereas the compounds 4-(trifluoromethyl)-N-(3-isopropoxy-1-isopropyl-4-(3,5-dimethyl-2H-pyrrol-2-yl)-1H-pyrazol-5-yl)benzamide and 2,6-difluoro-N-(3-isopropoxy-1-isopropyl-4-(3,5-dimethyl-2H-pyrrol-2-yl)-1H-pyrazol-5-yl) benzamide were found to be active against the pancreatic cell line only. Rest all the other compounds were found to exhibit moderate to good activity towards both the cell lines. © 2017 Elsevier B.V.
About the journal
JournalData powered by TypesetJournal of Photochemistry and Photobiology B: Biology
PublisherData powered by TypesetElsevier BV
ISSN1011-1344
Open AccessNo
Authors (4)