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In vitro antifungal activity of novel azole derivatives with a morpholine ring, UR-9746 and UR-9751, and comparison with fluconazole

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Abstract

Thirty-three patient fungal isolates were studied by broth macrodilution methods for susceptibility to novel azole derivatives with a morpholine ring, UR-9746 and UR-9751, and fluconazole. MICs (μg/ml) ranged widely, but none had lower MICs for Candida albicans or Cryptococcus neoformans than UR-9751. Fluconazole and UR-9751 had the most activity versus other Candida species. Activity was demonstrated versus endemic fungal pathogens. Aspergillus species were generally resistant, although modest activity was seen. UR-9746 and UR-9751 are active in vitro, with a potency comparable to that of fluconazole.

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