摘要:
Forty-five novel cephalosporin derivatives with activity against methicillin-resistant Staphylococcus aureus (MRSA) are described. The compounds contain novel cinnamic acid moieties at C-7 that were synthesized using a key Heck reaction followed by nucleophilic aromatic substitution reactions. The most active compound (41) displayed an MIC90 against MRSA of 1.0 mug/mL, and a PD50 of 0.8 mg/kg. Compound 14 was found to be very safe in a mouse model of acute toxicity. (C) 2002 Elsevier Science Ltd. All rights reserved.