Journal of Inorganic Biochemistry
Journal of Inorganic Biochemistry
5 years ago

Bis(diphenylphosphino)amines-containing ruthenium cymene complexes as potential anti-Mycobacterium tuberculosis agents

Bis(diphenylphosphino)amines-containing ruthenium cymene complexes as potential anti-Mycobacterium tuberculosis agents
Several ruthenium complexes have been investigated regarding anti-Mycobacterium tuberculosis (anti-MTb) activity, with some diphosphine-containing ruthenium complexes comparable to first and second line drugs. However, to the best of our knowledge, there is no PNP-containing ruthenium complexes applied as metallodrugs. Thus, this study focused on the synthesis, characterization and anti-MTb activity of a new series of coordination compounds with general formula [RuCl(η6-p-cymene)(PNR P)]X (R=CH2Py (Py=pyridine)− [1a], CH2Ph (Ph=phenyl)− [1b], Ph− [1c] and p-tol (p-tol= p-tolyl)− [1d]; X=PF6 − or BF4 −). The complexes were fully characterized by NMR (1H, 31P{1H}), vibrational spectroscopy (FTIR), ESI-MS, molar conductance, elemental analysis and X-ray diffraction studies. The molecular structures of [1a]PF 6 , [1c]BF 4 and [1d]PF 6 were determined and confirm the spectroscopic and ESI-MS data. The complexes were used in anti-MTb trials, and the preliminary results are presented. The complexes are promising anti-MTb agents with MIC90 (Minimum Inhibitory Concentration of compounds required to inhibit the growth of 90% of MTb) values comparable with the Ethambutol, the reference drug used in this work, and complex [1a]BF 4 presented the highest selectivity index.

Publisher URL: www.sciencedirect.com/science

DOI: S0162013416304639

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