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Issue 93, 2016
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Arene ruthenium(ii) complexes with chalcone, aminoantipyrine and aminopyrimidine based ligands: synthesis, structure and preliminary evaluation of anti-leukemia activity

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Abstract

A series of arene ruthenium(II) (Ru) complexes with N-monodentate (AAP) and N,O- and N,N-bidentate chelating ligands (AAPS, ADABS, AAPPA and P2P) have been synthesized and evaluated for preliminary antileukemia activity. Single crystal X-ray studies of AAP-Ru, ADABS-Ru and P2P-Ru indicates that Ru(II) adopted a typical “three-leg piano-stool” geometry with pseudo-tetrahedral (AAP-Ru) and quasi-octahedral arrangements (ADABS-Ru and P2P-Ru). Supramolecular interactions (C–H⋯Cl, N–H⋯Cl and π–π) in the crystal lattice of AAP-Ru and ADABS-Ru resulted in a dimeric structure whereas P2P-Ru showed a supramolecular 1D chain. Importantly, preliminary in vitro anticancer activities for Ru-arene complexes have been evaluated against K562 (human chronic myeloid leukemia cell line) by means of MTT assay that showed strong anti-leukemic activity for AAPS-Ru (IC50 = 12.46 ± 0.47 μM) and P2P-Ru (IC50 = 11.8 ± 0.49 μM). The mechanistic studies indicated reactive oxygen species (ROS) mediated selective leukemic cells death without affecting the normal cells by AAPS-Ru. The initiation of apoptosis by AAPS-Ru treatment, particularly TNF-α induced cell death, was confirmed by pre-treatment with a selective TNF-α inhibitor.

Graphical abstract: Arene ruthenium(ii) complexes with chalcone, aminoantipyrine and aminopyrimidine based ligands: synthesis, structure and preliminary evaluation of anti-leukemia activity

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Supplementary files

Article information


Submitted
20 Jul 2016
Accepted
14 Sep 2016
First published
16 Sep 2016

RSC Adv., 2016,6, 90982-90992
Article type
Paper

Arene ruthenium(II) complexes with chalcone, aminoantipyrine and aminopyrimidine based ligands: synthesis, structure and preliminary evaluation of anti-leukemia activity

J. Pitchaimani, M. R. Charan Raja, S. Sujatha, S. Kar Mahapatra, D. Moon, S. P. Anthony and V. Madhu, RSC Adv., 2016, 6, 90982
DOI: 10.1039/C6RA18504E

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