RT journal article T1 Synthesis, antibacterial and antifungal activities of naphthoquinone derivatives: a structure–activity relationship study A1 Sánchez Calvo, Juan Manuel A1 R. Barbero, Gara A1 Guerrero Vásquez, Guillermo A A1 García Durán, Alexandra A1 Macías, Mariola A1 Rodríguez Iglesias, Manuel Antonio A1 González Molinillo, José María A1 Macías Domínguez, Francisco Antonio A2 Anatomía PatológicaBiología Celular, Histología, Historia de la Ciencia, Medicina Legal... A2 Química Orgánica K1 napthoquinone K1 antifungal K1 antibacterial K1 minimum inhibitory concentration K1 Structure–activity relationship AB The synthesis of 1,4-naphthoquinone derivatives is of great interest since these compounds exhibit strong activity as antimalarial, antibacterial, antifungal and anticancer agents. A series of 50 naphthoquinone derivatives was synthesized and evaluated for antibacterial and antifungal activity against Escherichia coli, Pseudomonas aeruginosa, Enterococcus faecalis, Staphylococcus aureus, Candida krusei, Candida parapsilosis and Cryptococcus neoformans using the broth microdilution method. The Candida species were the most susceptible microorganisms. Halogen derivatives of 1,4-naphthoquinone presented strong activity, e.g., 2-bromo-5-hydroxy-1,4-naphthoquinone, which exhibited inhibition at an MIC of 16 lg/ mL in S. aureus, and 2-chloro-5,8-dihydroxy-1,4-naphthoquinone, with an MIC of 2 lg/mL in C. krusei. These compounds showed higher activity against fungi, but the antibacterial activities were very low. The study of structure–activity relationships is very important in the search for new antimicrobial drugs due to the limited therapeutic arsenal. PB Medicinal Chemistry Research SN 1054-2523 YR 2016 FD 2016-04 LK http://hdl.handle.net/10498/20350 UL http://hdl.handle.net/10498/20350 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 08-nov-2026