Synthesis, Single Crystal X-ray Analysis, and Antifungal Profiling of Certain New Oximino Ethers Bearing Imidazole Nuclei.

Fungal infections threaten human health, particularly in immune-compromised patients worldwide. Although there are a large number of antifungal agents available, the desired clinical attributes for the treatment of fungal infections have not yet been achieved. Azoles are the mainstay class of the clinically used antifungal agents. In the current study, the synthesis, spectroscopic characterization, and antifungal activity of certain new oximino ethers - bearing imidazole nuclei are reported. The ()-configuration of the imine double bond of the synthesized compounds - has been confirmed via single crystal X-ray analysis of compound as a representative example of this class of compounds. The molecular structure of compound was crystallized in the monoclinic, 2₁/, = 18.7879(14) Å, 5.8944(4) Å, = 16.7621(12) Å, = 93.063(3)°, = 1855.5(2) ų, = 4. The in vitro antifungal activity of the synthesized compounds - were evaluated using diameter of the inhibition zone (DIZ) and minimum inhibitory concentration (MIC) assays against different fungal strains. Compound manifested anti- activity with an MIC value of 0.050 µmol/mL, being almost equipotent with the reference antifungal drug fluconazole (FLC),while compounds and are the most active congeners against , being equipotent and about twenty-three times more potent than FLC with an MIC value of 0.002 µmol/mL. The results of the current report might support the development of new potent and safer antifungal azoles.