Abstract
Two Voriconazole salts, namely, (H2FZ)2+·2(Cl−) (1) and (HFZ)+·NO3− (2) (FZ = (2R,3S)-2-(2,4-difluorophenyl)-3-(5-fluoro-4-pyrimidiny)-1-(1H-1,2,4-triazol-1-yl)-2-butanol) have been obtained through the reaction of Voriconazole, hydrochloric acid and nitrate acid, respectively. They were structurally characterized by FT-IR, elemental analyses (EA), single crystal X-ray diffraction, and thermogravimetric analysis (TGA). A variety of hydrogen bonds (OH⋯N, NH⋯Cl/O, CH⋯N/OF/Cl) were observed in the compounds 1 and 2, through which a 3D supramolecular architecture is generated. Both two salts 1 and 2 show the promising bioactivities against Aspergillus species (Aspergillus niger, Aspergillus terreus, Aspergillus fumigatus and Aspergillus flavus) and Candida ones (Candida albicans, Candida krusei, Candida glabrata and Cryptococcus neoformans), which is obviously more excellent than that of FZ. Additionally, the solubility of two salts is considerably higher than that of the drug Voriconazole.
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