Synthesis, Biological and Computational Evaluation of Novel 2,3-dihydro-2-aryl-4-(4- isobutylphenyl)-1,5-benzothiazepine Derivatives as Anticancer and Anti-EGFR Tyrosine Kinase Agents

Afzal    B.    Shaik; Yejella    R.    Prasad; Srinath      Nissankararao; Shaik       Shahanaaz

doi:10.2174/1871520620666200130091142

Abstract

Background: Despite the availability of a variety of chemotherapeutic agents, cancer is still one of the leading causes of death worldwide because of the problems with existing chemotherapeutic agents like objectionable side effects, lack of selectivity, and resistance. Hence, there is an urgent need for the development of novel anticancer agents with high usefulness, fewer side effects, devoid of resistance and superior selectivity.

Objective: The objective of this study is to synthesize a series of novel 1,5-benzothiazepine derivatives and evaluate their anticancer activity employing biological and computational methods.

Methods: Twenty new benzothiazepines (BT1-BT20) were prepared by condensing different 1-(4- isobutylphenyl)ethanone chalcones with 2-amiothiophenol and evaluated for their anticancer activity by MTT assay against three cell lines including HT-29 (colon cancer), MCF-7 (breast cancer) and DU-145 (prostate cancer). These compounds were also tested for their inhibitory action against EGFR (Epidermal Growth Factor Receptor) tyrosine kinase enzyme by taking into account of their excellent action against colon and breast cancer cell lines. Further, the structural features responsible for the activity were identified by Pharmacophorebased modelling using Schrodinger’s PHASETM software.

Results: Among the 20 benzothiazepine derivatives, three compounds viz., BT18, BT19 and BT20 exhibited promising activity against the cell lines tested and the activity of BT20 was more than the standard methotrexate. Again the above three compounds showed excellent inhibitory activity with the percentage inhibition of 64.5, 57.3 and 55.8 respectively against EGFR (Epidermal Growth Factor Receptor) tyrosine kinase. PHASE identified a five-point AHHRR model for the proposed activity and the computational studies provided insights into the structural requirements for the anticancer activity and the results were consistent with the observed in vitro activity data.

Conclusion: These novel benzothiazepines will be useful as lead molecules for the further development of new cancer therapies against colon and breast cancers.

Keywords: 1, 5-benzothiazepine, anticancer activity, MTT assay, EGFR tyrosine kinase, PHASETM, AHHRR model.

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DOI https://dx.doi.org/10.2174/1871520620666200130091142	Print ISSN 1871-5206
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Anti-Cancer Agents in Medicinal Chemistry

Synthesis, Biological and Computational Evaluation of Novel 2,3-dihydro-2-aryl-4-(4- isobutylphenyl)-1,5-benzothiazepine Derivatives as Anticancer and Anti-EGFR Tyrosine Kinase Agents

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