Design, Synthesis and Anticancer Screening of Novel Pyrazole Derivatives Linking to Benzimidazole, Benzoxazole and Benzothiazole

Substituted aromatic amines were diazotized followed by coupling with malononitrile to afford substituted phenyl hydrazono-malononitrile compounds 2a-c. Compounds 3a-c were prepared through the reaction of substituted phenyl hydrazono-malononitriles 2a-c with phenyl hydrazine, while the reaction of compounds 2a-c with hydrazine hydrate afforded diamino compounds 4a-c. The diamino compounds 4a-c was condensed with different substituted aromatic aldehydes to yield N-benzylidine pyrazole diamines 5a-i. The structure of the newly synthesized compounds was confirmed by IR, 1H NMR, MS spectral data and elemental analysis. Twelve novel compounds 3a-c and 5a-i were screened for their anticancer activities against breast carcinoma (T47D) and human hepatocarcinoma cell lines (Huh7) compared with Doxorubicin. The detailed synthesis, spectroscopic data and anticancer activities of the synthesized compounds were reported. *Corresponding author: Khaled RA Abdellatif, Organic Chemistry Department, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt, Tel: 00201002535444; Fax: 0020822317958; E-mail: [email protected] Received February 11, 2014; Accepted February 26, 2014; Published February 28, 2014 Citation: Abdelgawad MA, Abdellatif KRA, Ahmed OM(2014) Design, Synthesis and Anticancer Screening of Novel Pyrazole Derivatives Linking to Benzimidazole, Benzoxazole and Benzothiazole. Med chem S1: 001. doi:10.4172/2161-0444.S1001 Copyright: © 2014 Abdelgawad MA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.