The incidence of life-threatening fungal infections has dramatically increased for decades. In order to develop novel antifungal agents, two series of (2R,3R)-1-(1H-1,2,4-triazol-1-yl)-2-(2,4-difluorophenyl)-3-(N-substitutied)-2-butanols (3a-o, 5a-f, 8a-u), which were analogues of voriconazole, were designed, synthesized and characterized by 1H NMR, 13C NMR and HRMS. The MIC80 values showed that the target compounds 3a-o indicated better activities than fluconazole on three important fungal pathogens except for 3i. Significant activity of compounds 3d, 3k, 3n, 3m and 3o was observed on the Aspergillus fumigatus strain (MIC80 range: 1–0.125 μg/ml). Especially, compound 3k had strong activity to inhibit the growth of ten fungal pathogens. But it didn't exhibit good activity in in vivo value. Molecular docking experiments demonstrated that 3k possessed superior affinity with target enzyme by strong hydrogen bond from morpholine ring.
European Journal of Medicinal Chemistry – Elsevier
Published: Jan 1, 2018
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