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Medicinal Chemistry

Editor-in-Chief

ISSN (Print): 1573-4064
ISSN (Online): 1875-6638

Synthesis and In Vitro Biological Evaluation of Novel Pyrazole Derivatives as Potential Antitumor Agents

Author(s): Michael S. Christodoulou, Nikolas Fokialakis, Sangkil Nam, Richard Jove, Alexios-Leandros Skaltsounis and Serkos A. Haroutounian

Volume 8 , Issue 5 , 2012

Page: [779 - 788] Pages: 10

DOI: 10.2174/157340612802084252

Price: $65

Abstract

The synthesis of twenty seven novel pyrazole derivatives bearing aryl substituted groups at positions 1 and 3 of the pyrazole structural motif and various functional groups at position 4 is presented. The critical step for their synthesis is the TCT/DMF promoted cyclization of the corresponding hydrazine precursors, which provided the desired pyrazole skeleton. The anticancer properties of the novel pyrazole derivatives were evaluated in vitro against human prostate (DU145), melanoma (A2058) and breast cancer (MCF-7) cell lines. Among the compounds tested, pyrazole 5a and its methoxy derivatives 3d,e were assayed as the most potent, displaying selective activity against the MCF-7 cell line with IC50 values of 14, 10 and 12 μM respectively. Results herein indicate that the reported backbone represents a promising structural lead for further development as antitumor agents.

Keywords: Pyrazole, Antitumor activity, Breast cancer, Melanoma, Prostate cancer, skeleton, malignancies, heterocyclic, chromatography, silica gel


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