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ZnO Nanoparticles Catalyst in the Synthesis of Bioactive Fused Pyrimidines as Anti-breast Cancer Agents Targeting VEGFR-2

Author(s):

Dina H. Dawood, Eman M. H. Abbas, Thoraya A. Farghaly*, Mamdouh M. Ali and Mohammed F. Ibrahim   Pages 1 - 10 ( 10 )

Abstract:


Background: Pyrimidines emerged as a remarkable class of heterocyclic compounds that have reinforced the pharmaceutical chemistry with various bioactive antitumor agents. Moreover, pyrimidine scaffold displayed VEGFR-2 inhibitory activity. Also, nano-sized catalysts are used in organic reactions in order to speed up the catalytic process. Objective: We were interested herein to synthesize a new series of fused pyrimidines using ZnO(NPs) to investigate their antitumor efficiency against breast MCF7 cancer and their VEGFR- 2 inhibition properties. Method: A simple and efficient method for the synthesis of fused pyrimidines was developed using zinc oxide nanoparticles ZnO(NPs) in refluxing ethanol. Results: The proposed structures of all new fused pyrimidines are in agreement with their spectral data. Antitumor evaluation of newly fused pyrimidine derivatives against breast MCF-7 cancer was performed. It was apparent that the 2-phenylpyrazolo[1,5-a]pyrimidine derivatives 9a (IC50 = 9.12±1.16 µg/ml), 9c (IC50 = 9.10±1.07 µg/ml) and 9d (IC50 = 9.60±1.22 µg/ml) exhibited equipotent antitumor activity as Tamoxifen (IC50 = 9.11±0.90 µg/ml). Also, the inhibitory activity of the novel fused pyrimidine derivatives on VEGFR-2 as well as Tamoxifen was determined using breast cancer cell line MCF-7. The data was obvious that 2-phenylpyrazolo[1,5-a]pyrimidine derivatives 9a, 9c and 9d exhibited noticeable VEGFR-2 inhibitory effect with % inhibition ranging from 80-84 % versus Tamoxifen 93.5%. Conclusion: We succeeded in this context to synthesize new fused pyrimidines using ZnO(NPs) as anti-breast cancer agents targeting VEGFR-2.

Keywords:

ZnO(NPs), fused pyrimidines, anti-breast cancer, VEGFR-2 inhibitory effect, heteroamines.

Affiliation:

Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Division, National Research Center, 33 El Bohouth St.( former El Tahrir St.) Dokki, Giza, p.o.box 12622, Chemistry of Natural and Microbial Products Department, Pharmaceutical and Drug Industries Research Division, National Research Center, 33 El Bohouth St.( former El Tahrir St.) Dokki, Giza, p.o.box 12622, Department of Chemistry, Faculty of Science, Cairo University, Giza, 12613, Biochemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Center, 33 El Bohouth St.( former El Tahrir St.) Dokki, Giza, p.o. box 12622, Biochemistry Department, Genetic Engineering and Biotechnology Research Division, National Research Center, 33 El Bohouth St.( former El Tahrir St.) Dokki, Giza, p.o. box 12622



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