The antifungal activities of some 6-[N-(halophenyl)amino]-7-chloro-5,8-quinolinediones againstCandida species |
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Authors: | Chung-Kyu Ryu Dong-Hyun Kim |
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Institution: | College of Pharmacy, Ewha Womans University, Seoul, Korea. |
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Abstract: | A series of 6-N-(halophenyl)amino]-7-chloro-5,8-quinolinedione derivatives 1-10 were tested for antifungal susceptibilities, in vitro, against pathogenic Candida species such as C. albicans, C. glabrata, C. krusei, C. parapsilosis and C. tropicalis. The MICs were determined by the standard macrodilution techniques, according to the NCCLS 1992 guidelines. The 6-N-(halophenyl)amino]-7-chloro-5,8-quinolinedione derivatives showed generally potent antifungal activities against pathogenic Candida species. Among them, derivative 1, 2, 5 and 7 showed more potent antifungal activities than ketoconazole. All derivatives 1-10 had specially potent activities against C. tropicalis. Derivative 1 and 2 containing (N-3,4-dihalo-phenyl)amino moiety exhibited the potent antifungal activities. Derivative 2 with (3,4-dichlorophenyl)amino substituent was the most effective in preventing the growth of Candida species at MICs 4 micrograms/ml respectively. |
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