Novel Pyrazolyl Benzoxazole Conjugates: Design, Synthesis, Molecular Docking Studies and in vitro Anticancer Activities

Author(s): Arunkumar Thiriveedhi*, Ratnakaram Venkata Nadh, Navuluri Srinivasu, Narayana Murthy Ganta.

Journal Name: Letters in Organic Chemistry

Volume 16 , Issue 8 , 2019

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Abstract:

Nowadays, hybrid drugs have gained a significant role in the treatment of different health problems. Most of the hybrid molecules with different heterocyclic moieties were proved to be potent anti-tumor agents in cancer chemotherapy. Hence, the present study is aimed at the evaluation of in vitro anticancer activity of novel hybrid molecules (pyrazolyl benzoxazole conjugates) and to investigate their anticancer activity by molecular docking studies. Designed, synthesized and characterized the novel pyrazolyl benzoxazole conjugates. Anticancer activity of these compounds was determined by SRB assay. Then molecular docking studies were carried out against proto-oncogene tyrosine-protein kinase (ATP-Src, PDB: 2BDF), a putative target for cancer. All the synthesized compound derivatives were evaluated against MCF-7, KB, Hop62 and A549 cancer cell lines. Compounds 9b and 9c exhibited excellent anticancer activities with GI50 values of <0.1 µM against MCF-7 and A549 cell lines. Compound 9e exhibited good antitumor activity on MCF-7 and A-549 with GI50 values of 0.12 µM and 0.19 µM respectively. Compound 9g showed better anticancer activity on A-549 cancer cell line with GI50 of 0.34 µM. The two-hybrid molecules 9b and 9c are found to be comparably potent with the standard drug doxorubicin and may act as drug lead compounds in medicinal chemistry aspect. The present docking investigation proved that having benzoxazole of compound 9c at the position of benzofuran of reference compound (N-acetyl pyrazoline derivative) might be valid for contributing to anti-cancer activity.

Keywords: Benzoxazole, pyrazole, doxorubicin, anticancer activity, molecular docking studies, chemotherapy.

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Article Details

VOLUME: 16
ISSUE: 8
Year: 2019
Page: [619 - 626]
Pages: 8
DOI: 10.2174/1570178615666181022141919
Price: $65

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