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Mezlocillin

Beta-lactam antibiotic

Mezlocillin
Summary

Beta-lactam antibiotic

| Drugs.com =

| elimination_half-life = 1.3–4.4 hours

Mezlocillin is a broad-spectrum penicillin antibiotic. It is active against both Gram-negative and some Gram-positive bacteria. Unlike most other extended spectrum penicillins, it is excreted by the liver, therefore it is useful for biliary tract infections, such as ascending cholangitis.

Mechanism of action

Main article: Beta-lactam antibiotic

Like all other beta-lactam antibiotics, mezlocillin inhibits the third and last stage of bacterial cell wall synthesis by binding to penicillin binding proteins. This ultimately leads to cell lysis.

Susceptible organisms

Gram-negative

  • Bacteroides spp., including B. fragilis
  • Enterobacter spp.
  • Escherichia coli
  • Haemophilus influenzae
  • Klebsiella species
  • Morganella morganii
  • Neisseria gonorrhoeae
  • Proteus mirabilis
  • Proteus vulgaris
  • Providencia rettgeri
  • Pseudomonas spp., including P. aeruginosa
  • Serratia marcescens

Gram-positive

  • Enterococcus faecalis
  • Peptococcus spp.
  • Peptostreptococcus spp.

Synthesis

Mezlocillin synthesis:<ref>W. Schroeck, H. R. Furtwaengier, H. B. Koenig, and K. G.Metzer, German Offen. 2,318,955 (1973); Chem. Abstr., 82,31313b (1975).</ref><ref>H. B. Koenig, K. G. Metzer, H. A. Offe, and W. Schroeck, Eur. J_. Med. Chem., 17, 59 (1982).</ref>

Mezlocillin can be made in a variety of ways including reaction of ampicillin with chlorocarbamate 1 in the presence of triethylamine. Chlorocarbamate 1 itself is made from ethylenediamine by reaction with phosgene to form the cyclic urea followed by monoamide formation with methanesulfonyl chloride and then reaction of the other nitrogen atom with phosgene and trimethylsilylchloride.

The closely related analogue azlocillin is made in essentially the same manner as mezlocillin. but with omission of the methylation step.

References

Further reading

References

  1. W. Schroeck, H. R. Furtwaengier, H. B. Koenig, and K. G.Metzer, German Offen. 2,318,955 (1973); Chem. Abstr., 82,31313b (1975).
  2. H. B. Koenig, K. G. Metzer, H. A. Offe, and W. Schroeck, Eur. J_. Med. Chem., 17, 59 (1982).
Wikipedia Source

This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page.

penicillins enantiopure-drugs imidazolidinones methanesulfonamide-derivatives phenyl-compounds
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