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Cefditoren pivoxil

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Cefditoren.svg

 

 

Cefditoren pivoxil

ME-1207, Spectracef, Meiact

117467-28-4

  1. (-)-(6R,7R)-2,2-dimethylpropionyloxymethyl 7-((Z)-2-(2-aminothiazol-4-yl)-2-methoxyiminoacetamido)-3-((Z)-2-(4-methylthiazol-5-yl)ethenyl)-8-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylate
  2. 7-(2-(2-aminothiazol-4-yl)-2-(methoxyimino)acetamido)-3-(2-(4-methylthiazol-5-yl)ethenyl)cephem-4-carboxylic acid pivaloyloxymethyl ester
  3. CDTR-PI
  4. cefditoren pivoxil
  5. ME 1207
  6. ME-1207
  7. Spectracef

 

Novel crystalline form of cefditoren pivoxil (first disclosed in EP175610). Represents Yungjin Pharma’s first interest in this API, which was developed and launched by Meiji Seika and previous licensee TAP Pharmaceuticals, and now marketed by Merus Labs, for treating chronic bronchitis and community acquired pneumonia caused by bacterial infections

 

Cefditoren is a third-generation cephalosporin antibiotic for oral use. It is commonly marketed under the trade name Spectracef by Vansen Pharma Inc.

Cefditoren is also marketed under the name Meiact by Meiji Seika Pharma Co., Ltd.[1]

Cefditoren pivoxil is a prodrug which is hydrolyzed by esterases during absorption, and the drug is distributed in the circulating blood as active cefditoren. Cefditoren is a cephalosporin with antibacterial activity against gram-positive and gram-negative pathogens. Cefditoren is effective against Staphylococcus aureus (methicillin-susceptible strains, including b-lactamase-producing strains), penicillin-susceptible strains of Staphylococcus aureus and Streptococcus pneumoniae, Streptococcus pyogenes, Haemophilus influenzae (including b-lactamase-producing strains), Haemophilus parainfluenzae (including b-lactamase-producing strains), Moraxella catarrhalis (including b-lactamase-producing strains), Streptococcus agalactiae, Streptococcus Groups C and G, and Streptococcus, viridans group (penicillin-susceptible and -intermediate strains).

Spectrum of bacterial susceptibility

Cefditoren has a broad spectrum of activity and has been used to treat bacterial infections of the skin and respiratory tract, including bronchitis, pneumonia, and tonsillitis. The following represents MIC susceptibility data for a few medically significant microorganisms.

  • Haemophilus influenzae: ≥0.063 – 0.25 μg/ml
  • Staphylcoccus aureus: 0.25 – >128 μg/ml (includes MRSA)
  • Streptococcus pyogenes: ≤0.004 – 2 μg/ml[2]

Cefditoren is a broad-spectrum antibiotic against Gram-negative and Gram-positive bacteria, but does not have antibacterial activity against Pseudomonas aeruginosa.[3]

Clinical use

Main article: Cephalosporin

Indications

Cefditoren is used to treat uncomplicated skin and skin structure infections, community-acquired pneumonia, acute bacterial exacerbation of chronic bronchitis, pharyngitis, and tonsillitis.

Formulations

Cefditoren is available as 200- and 400-mg tablets. It can be formulated as the prodrug cefditoren pivoxil.

Chemical structure of cefditoren pivoxil

EP 0175610; ES 8704955; JP 1986178991; JP 1987019593
The reaction of 3-(chloromethyl)-7-(phenylacetamido)-3-cephem-4-carboxylic acid 4-methoxybenzyl ester (I) with triphenylphosphine and NaI in acetone gives the corresponding phosphonium salt (II), which is condensed with 4-methylthiazole-5-carboxaldehyde (III) by means of NaHCO3 in dichloromethane affording 3-[2(Z)-(4-methylthiazol-5-yl)vinyl]-7-(phenylacetamido)-3-cephem-4-carboxylic acid 4-methoxybenzyl ester (IV). The cleavage of the amido group of (IV) with PCl5 and pyridine yields the 7-amino compound (V), which is condensed with 2-(methoxyimino)-2-[2-(tritylamino)thiazol-4-yl]acetic acid (VI) by means of POCl3 in dichloromethane giving 3-[2(Z)-(4-methylthiazol-5-yl)vinyl]-7-[2(Z)-methoxyimino)-2-(2-tritylamino)thiazol-4-yl)acetamido]-3-cephem-4-carboxylic acid 4-methoxybenzyl ester (VII). The deprotection of (VII) with trifluoroacetic acid and anisole yields the free amino acid (VIII), which is finally esterified with iodomethyl pivalate (IX) in DMF.

References

  1. Meiact Full Description
  2. http://www.toku-e.com/Assets/MIC/Cefditoren%20sodium.pdf
  3. “Disease relevance of Cefditoren”. Retrieved June 24, 2014.
  4. Chem Pharm Bull 1992,39(9),2433
  5. J Antibiot 1990,43(8),1047
Synthesis Reference

Kiyoshi Yasui, Masahiro Onodera, Masamichi Sukegawa, Tatsuo Watanabe, Yuichi Yamamoto, Yasushi Murai, Katsuharu Iinuma, “Crystalline substance of cefditoren pivoxyl and the production of the same.” U.S. Patent US6294669, issued March, 1986.

Patent Submitted Granted
Therapy for Treating Resistant Bacterial Infections [US2009275552] 2009-11-05
Process for the preparation of thiazole intermediate [US6833459] 2003-10-30 2004-12-21
Nanoparticulate and Controlled Release Compositions Comprising Cefditoren [US8119163] 2008-11-13 2012-02-21

External links

Cefditoren
Cefditoren.svg
Systematic (IUPAC) name
(7R)-7-((Z)-2-(2-Aminothiazol-4-yl)-2-(methoxyimino)acetamido)-3-((Z)-2-(4-methylthiazol-5-yl)vinyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Clinical data
Trade names Spectracef
AHFS/Drugs.com monograph
MedlinePlus a605003
Legal status
?
Identifiers
CAS number 104145-95-1 
ATC code J01DD16
PubChem CID 9870843
DrugBank DB01066
ChemSpider 8046534 Yes
UNII 81QS09V3YW Yes
Chemical data
Formula C19H18N6O5S3 
Mol. mass 506.58 g/mol

 

 

NEW PATENT

 

WO-2014189308, Yungjin Pharmaceutical Co Ltd


Filed under: Uncategorized Tagged: Cefditoren pivoxil

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