Synthesis and Biological Activity of Novel Zinc-Itraconazole Complexes in Protozoan Parasites and Sporothrix spp

Antimicrob Agents Chemother. 2020 Apr 21;64(5):e01980-19. doi: 10.1128/AAC.01980-19. Print 2020 Apr 21.


The new complexes Zn(ITZ)2Cl2 (1) and Zn(ITZ)2(OH)2 (2) were synthetized by a reaction of itraconazole with their respective zinc salts under reflux. These Zn-ITZ complexes were characterized by elemental analyses, molar conductivity, mass spectrometry, 1H and 13C{1H} nuclear magnetic resonance, and UV-vis and infrared spectroscopies. The antiparasitic and antifungal activity of Zn-ITZ complexes was evaluated against three protozoans of medical importance, namely, Leishmania amazonensis, Trypanosoma cruzi, and Toxoplasma gondii, and two fungi, namely, Sporothrix brasiliensis and Sporothrix schenckii The Zn-ITZ complexes exhibited a broad spectrum of action, with antiparasitic and antifungal activity in low concentrations. The strategy of combining zinc with ITZ was efficient to enhance ITZ activity since Zn-ITZ-complexes were more active than the azole alone. This study opens perspectives for future applications of these Zn-ITZ complexes in the treatment of parasitic diseases and sporotrichosis.

Keywords: Leishmania amazonensis; Sporothrix spp.; Toxoplasma gondii; Trypanosoma cruzi; itraconazole; zinc.

Publication types

  • Research Support, Non-U.S. Gov't