Abstract
3-[(2-Chloroquinolin-3-yl) methylene]-5-phenylfuran-2(3H)-one derivatives (6a–j and 7a–j) have been synthesized and evaluated for their antimalarial activity. Three compounds 7d, 7f, and 7g showed excellent activity (0.50–0.72 µg/mL). In addition, six compounds were active in range below 5 µg/mL. A preliminary structure–activity relationship analysis of the series suggested that electropositive character is beneficial for antimalarial activity. Falcipain-2 was identified as potential target for the compounds by in silico studies. The docking studies of synthesized compounds on falcipain-2 revealed vital interactions and their binding conformation. Compound 7d and 7f could be used as lead to develop selective falcipain-2 inhibitors as they showed good inhibition of the enzyme in enzyme assay studies.
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Abbreviations
- FP-2:
-
Falcipain-2
- FP-3:
-
Falcipain-3
- DMF:
-
N,N-dimethylformamide
- PDB:
-
Protein data bank
- SAR:
-
Structure–activity relationship
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Acknowledgments
The authors wish to acknowledge the University Grants Commission, Govt. of India, New Delhi for providing financial support (F. No. 36-110/2008 (SR)). We do not have any competing financial interests with regard to this work. We also thank DBT, Ministry of Science and Technology, Govt of India for providing Bioinformatics facility. The authors are thankful to NIMR, Dwarka for helping us in carrying out the falcipain-2 activity.
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Akhter, M., Saha, R., Tanwar, O. et al. Synthesis and antimalarial activity of quinoline-substituted furanone derivatives and their identification as selective falcipain-2 inhibitors. Med Chem Res 24, 879–890 (2015). https://doi.org/10.1007/s00044-014-1139-1
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DOI: https://doi.org/10.1007/s00044-014-1139-1