| Identification | More | [Name]
Cefazedone | [CAS]
56187-47-4 | [Synonyms]
CEFAZEDONE SODIUM
REFOSPORIN
SODIUM-7-[3,5-DICHLORO-4-DIHYDROPYRIDYLACETYLAMINO]-3-[[(5-METHYL-1,3,4-THIADIAZOLYL)-THIO]METHYL]-3-CEPHEM-4-CARBOXYLATE
(6r-trans)--8-oxo
1(4h)-pyridinyl)acetyl)amino)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)
7-(((3,5-dichloro-4-oxo-5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylicaci
cefazedone
REFOSPORIN[SODIUM-7-[3,5-DICHLORO-4-DIHYDROPYRIDYLACETYLAMINO]-3-[[(5-METHYL-1,3,4-THIADIAZOLYL)-THIO]METHYL]-3-CEPHEM-4-CARBOXYLATE]
(6R,7R)-7-(2-(3,5-Dichloro-4-oxo-1(4H)-pyridyl)acetamido)-3-(((5-methyl-1,3,4-thiadiazol-2-yl)thio)methyl)-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
(6R,7R)-7-[(3,5-Dichloro-4-oxo-1(4H)-pyridyl)acetylamino]-3-[[(5-methyl-1,3,4-thiadiazol-2-yl)thio]methyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]octan-2-ene-2-carboxylic acid
(6R,7R)-7-[2-(3,5-Dichloro-4-oxo-1(4H)-pyridyl)acetylamino]-3-[(5-methyl-1,3,4-thiadiazol-2-yl)thiomethyl]-8-oxo-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylic acid
Refosporen | [EINECS(EC#)]
611-363-5 | [Molecular Formula]
C18H14Cl2N5NaO5S3 | [MDL Number]
MFCD01682029 | [Molecular Weight]
570.43 | [MOL File]
56187-47-4.mol |
| Hazard Information | Back Directory | [Originator]
Cefazedone Sodium,Arocor Holdings Inc. | [Uses]
Semi-synthetic cephalosporin antibiotic. Antibacterial. | [Definition]
ChEBI: A cephalosporin compound having [(5-methyl-1,3,4-thiadiazol-2-yl)sulfanyl]methyl and [(3,5-dichloro-4-oxopyridin-1(4H)-yl)acetamido side-groups. | [Manufacturing Process]
A solution of 1 eq. of the tert-butyl ester of 7-aminocephalosporanic acid and
1 eq. of dicyclohexylcarbodiimide in 100 ml of methylene chloride/DMF (1:1)
is cooled to 0°C. The mixture is combined with 1 eq. of 3,5-dichloro-4-
pyridone-1-acetic acid; after 5 min the ice bath is removed and the mixture
agitated for another 30 min at 25°C. The thus-formed urea is filtered off and
the filtrate filtered over silica gel (eluent: ethyl acetate/1% methanol). The
solvent is concentrated by evaporation, and the thus-obtained tert-butyl ester
of 7-(3,5-dichloro-1,4-dihydro-4-oxo-1-pyridylacetamido)cephalosporanic acid
is crystallized from ether.
1 eq. of the tert-butyl ester is dissolved in 30 ml of trifluoroacetic acid. After
30 minutes, the solution is evaporated and the thus-produced 7-(3,5-dichloro-
1,4-dihydro-4-oxo-1-pyridylacetamido)cephalosporanic acid crystallized from
ether.
1 eq. of the obtained 7-(3,5-dichloro-1,4-dihydro-4-oxo-1-pyridylacetamido)
cephalosporanic acid is dissolved in 60 ml of saturated aqueous sodium
bicarbonate solution at a pH of below 7 and combined with 1 eq. of 5-methyl-
1,3,4-thiadiazole-2-thiol in 20 ml of acetone. The reaction solution is agitated
for 2 hours at 80°C and at a pH of 6.3 under a nitrogen atmosphere. The
acetone is thereupon removed, the solution is washed with ether and acidified
to pH 2. The thus-obtained 3-(1-methyltetrazolyl-5-mercaptomethyl)-7-(3,5-
dichloro-1,4-dihydro-4-oxo-1-pyridylacetamido)-3-cephem-4-carboxylic acid is
filtered off and dried. IR spectrum confirmed the structure of cefazedone.
In practice it is usually used as sodium salt. | [Therapeutic Function]
Antibiotic |
|
|