Discovery and Characterization of Potent Thiazoles versus Methicillin- and Vancomycin-Resistant Staphylococcus aureus
摘要:
Methicillin- and vancomycin-resistant Staphylococcus aureus (MRSA and VRSA) infections are growing global health concerns. Structure-activity relationships of phenylthiazoles as a new antimicrobial class have been addressed. We present 10 thiazole derivatives that exhibit strong activity against 18 clinical strains of MRSA and VRSA with acceptable PK profile. Three derivatives revealed an advantage over vancomycin by rapidly eliminating MRSA growth within 6 h, and no derivatives are toxic to HeLa cells at 11 mu g/mL.
Discovery and Characterization of Potent Thiazoles versus Methicillin- and Vancomycin-Resistant Staphylococcus aureus
摘要:
Methicillin- and vancomycin-resistant Staphylococcus aureus (MRSA and VRSA) infections are growing global health concerns. Structure-activity relationships of phenylthiazoles as a new antimicrobial class have been addressed. We present 10 thiazole derivatives that exhibit strong activity against 18 clinical strains of MRSA and VRSA with acceptable PK profile. Three derivatives revealed an advantage over vancomycin by rapidly eliminating MRSA growth within 6 h, and no derivatives are toxic to HeLa cells at 11 mu g/mL.
An investigation of phenylthiazole antiflaviviral agents
作者:Abdelrahman S. Mayhoub、Mansoora Khaliq、Carolyn Botting、Ze Li、Richard J. Kuhn、Mark Cushman
DOI:10.1016/j.bmc.2011.04.041
日期:2011.6
Flaviviruses are one of the most clinically important pathogens and their infection rates are increasing steadily. The phenylthiazole ring system has provided a template for the design and synthesis of antiviral agents that inhibit the flaviviruses by targeting their E-protein. Unfortunately, there is a correlation between phenylthiazole antiflaviviral activity and the presence of the reactive and therefore potentially toxic mono-or dibromomethyl moieties at thiazole-C4. Adding a linear hydrophobic tail para to the phenyl ring led to a new class of phenylthiazole antiflaviviral compounds that lack the toxic dibromomethyl moiety. This led to development of a drug-like phenylthiazole 12 that had high antiflaviviral selectivity (TI = 147). (C) 2011 Elsevier Ltd. All rights reserved.