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Recent developments on ketolides and macrolides.

Y J Wu1, W G Su

  • 1Pfizer Central Research, Eastern Point Road, Groton, Connecticut 06340, USA. Yong-Jin.Wu@BMS.com

Current Medicinal Chemistry
|September 20, 2001
PubMed
Summary
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New ketolide drugs, HMR-3647 and ABT-773, show promise for treating bacterial infections, including resistant strains. Research also explores novel 4"-carbamates for combating macrolide-resistant organisms.

Area of Science:

  • Medicinal Chemistry
  • Microbiology
  • Pharmacology

Background:

  • Erythromycin A semi-synthesis has driven innovation in antibacterial drug discovery.
  • Community-acquired bacterial infections pose a significant public health challenge.
  • Emergence of macrolide and beta-lactam resistance necessitates novel therapeutic agents.

Purpose of the Study:

  • To review recent advancements in ketolide and macrolide chemistry.
  • To assess the antibacterial activity of novel drug candidates.
  • To highlight developments against resistant bacterial pathogens.

Main Methods:

  • Semi-synthetic modifications of erythromycin A.
  • Chemical synthesis of novel 4''-carbamates.
  • Evaluation of antibacterial spectrum and resistance profiles.

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Main Results:

  • Discovery of ketolide candidates HMR-3647 and ABT-773.
  • Demonstrated efficacy against susceptible and resistant S. pneumoniae, gram-negative bacteria, and atypical pathogens.
  • Identification of 4''-carbamates with activity against macrolide-resistant bacteria.

Conclusions:

  • Ketolides represent a promising class of antibiotics for community-acquired infections.
  • Novel macrolide derivatives offer potential solutions for combating antibiotic resistance.
  • Continued research in macrolide and ketolide chemistry is vital for addressing evolving bacterial threats.