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Eur J Med Chem. 2010 Dec;45(12):5827-32. doi: 10.1016/j.ejmech.2010.09.045. Epub 2010 Sep 25.

The synthesis of phenylalanine-derived C5-substituted rhodanines and their activity against selected methicillin-resistant Staphylococcus aureus (MRSA) strains.

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  • 1Department of Pharmaceutical Sciences, College of Pharmacy and Allied Health Professions, St. John's University, 8000 Utopia Parkway, Jamaica, NY 11439, USA.


A series of rhodanine compounds containing various substituents at the N3- and C5-positions were synthesized and their in vitro activity against a panel of clinically relevant MRSA strains was determined. The anti-MRSA activity of compounds 21 (MIC=3.9 μg/mL, MBC=7.8 μg/mL) and 22 (MIC=1.95 μg/mL, MBC=7.8 μg/mL) was significantly greater than that of the lead compounds, 1-3 and reference antibiotics penicillin G (MIC=31.25 μg/mL) and ciprofloxacin (MIC=7.8 μg/mL) and comparable to that of vancomycin (MIC=0.97 μg/mL). Compounds 21 and 22 were found to be bactericidal at only 2-4-fold higher than their MIC concentrations. In addition, their MIC values remained unchanged in the presence or absence of 10% serum. Overall, the results suggest that compounds 21 and 22 may be of potential use in the treatment of MRSA infections.

Copyright © 2010 Elsevier Masson SAS. All rights reserved.

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