6-Hydroxycinnolines 2 and cyclohexa-2,5-diene-1,4-dione derivatives 6 were synthesized and tested for in vitro antifungal activity against Candida and Aspergillus species. 6-Hydroxycinnolines 2 showed, in general, more potent antifungal activity against Candida species than the other cyclohexa-2,5-diene-1,4-diones. The results suggest that 6-hydroxycinnolines would be potent antifungal agents.
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