87239-81-4 Usage
Brand Name(s) in US
Simplicef (veterinary drug)
Vantin (human drug)
Description
Cefpodoxime proxetil is an orally active, broad-spectrum cephalosporin especially useful
in the treatment of bacterial infections in children. It is a prodrug converted by esterases
in the GI walls to cefpodoxime, which reportedly has a bacteriostatic spectrum
comparable to injectable third-generation cephem antibiotics.
Chemical Properties
Pale Yellow Solid
Uses
Different sources of media describe the Uses of 87239-81-4 differently. You can refer to the following data:
1. An antibacterial. A broad spectrum, orally absorbed third generation cephalosporin, ester prodrug of the active free acid metabolite, Cefpodoxime
2. A broad spectrum antibiotic. Cefpodoxime proxetil is commonly used in clinical in vitro microbiological antimicrobial susceptibility tests (panels, discs, and MIC strips) against gram positive and gram negative microbial isolates. Medical microbiologists use AST results to recommend antibiotic treatment options for infected patients. Product is to be used for research and development only.
Definition
ChEBI: The 1-[(isopropoxycarbonyl)oxy]ethyl (proxetil) ester prodrug of cefpodoxime. After swallowing, hydrolysis of the ester group occurs in the intestinal epithelium, to release active cefpodoxime in the bloodstream. It is used to treat acute otitis media, pha
yngitis, and sinusitis.
Manufacturing Process
A suspension of 30 g of 7-amino-3-methoxymethyl-3-cephem-4-carboxylic
acid in 300 ml acetone is mixed with 18.6 g 1,8-diazabicyclo[5.4.0]undec-7-
ene. The solution obtained mixed at ca. 0°C with 261 g of a 14% toluene
solution of 1-iodoethylisopropyl carbonate. After 4 hours the solution is poured
onto a mixture of 600 ml of water and 21 ml conc. HCl. The pH of mixture is
adjusted to ca. 1.0. The aqueous phase is extracted with 200 ml of hexane,
mixed with 700 ml ethyl acetate and pH is adjusted to ca. 8.2. A solution of
7-amino-3-methoxymethyl-3-cephem-4-carboxylic acid 1-
(isopropoxycarbonyloxy)ethyl ester is obtained. Diastereoisomeric ratio
B/(A+B)=0.49 (B is more apolar of the two diastereoisomers).To a solution of 37.4 g of 7-amino-3-methoxymethyl-3-cephem-4-carboxylic
acid 1-(isopropoxycarbonyloxy)ethyl ester in 689 ml ethyl acetate at 2-3°C is
added for 25 min 0.105 moles Z-(2-formamidothiazol-4-yl)-methoxy-acetyl
chloride hydrochloride. After 25 min pH is adjusted to ca. 6.5-7.3. After 1
hour the organic layer is washed with water and concentrated. It was obtained
a crude 5-thia-1-azabicyclo(4.2.0)oct-2-ene-2-carboxylic acid, 7-(((2Z)-(2-
amino-4-thiazolyl)(methoxyimino)acetyl)amino)-3-(methoxymethyl)-8-oxo-,
1-(((1-methylethoxy)carbonyl)oxy)ethyl ester, (6R,7R)- (Cefpodoxime
proxetil). Diastereoisomeric ratio 0.49.For purification 5 g of cefpodoxime proxetil are added to a mixture of 35 ml of
methanol and 0.6 ml conc. H2SO4. The mixture is stirred for 90 min and
slowly added during 25 min to a mixture of 2.1 g sodium bicarbonate and 400
ml water. The suspension obtained is stirred for 1 hour and the precipitate is
isolated through a suction filter, washed with water and dried over phosphorus
pentoxide at 35°C in a vacuum. 5-Thia-1-azabicyclo(4.2.0)oct-2-ene-2-
carboxylic acid, 7-(((2Z)-(2-amino-4-thiazolyl)(methoxyimino)acetyl)amino)-
3-(methoxymethyl)-8-oxo-, 1-(((1-methylethoxy)carbonyl)oxy)ethyl ester,
(6R,7R)-; (Cefpodoxime proxetil) is obtained in a diastereoisomeric ratio
0.528.
Brand name
Vantin (Pharmacia & Upjohn);Banan.
Therapeutic Function
Antibiotic
Clinical Use
Cefpodoxime proxetil (Vantin) is the isopropyloxycarbonylethylester of the third-generation cephalosporincefpodoxime. This orally active prodrug derivative is hydrolyzedby esterases in the intestinal wall and in theplasma to provide cefpodoxime. Tablets and a powder forthe preparation of an aqueous suspension for oral pediatricadministration are available. The oral bioavailability of cefpodoximefrom the proxetil is estimated to be about 50%.Administration of the prodrug with food enhances its absorption.The plasma half-life is 2.2 hours, which permitsadministration on a twice-daily schedule. Cefpodoxime is a broad-spectrum cephalosporin withuseful activity against a relatively wide range of Grampositiveand Gram-negative bacteria. It is also resistant tomany β-lactamases. Its spectrum of activity includes S.pneumoniae, Streptococcus pyogenes, S. aureus, H. influenzae,M. catarrhalis, and Neisseria spp. Cefpodoxime is alsoactive against members of the Enterobacteriaceae family,including E. coli, K. pneumoniae, and P. mirabilis. It thusfinds use in the treatment of upper and lower respiratory infections,such as pharyngitis, bronchitis, otitis media, andcommunity-acquired pneumonia. It is also useful for thetreatment of uncomplicated gonorrhea.
Veterinary Drugs and Treatments
In dogs, cefpodoxime is indicated for the treatment of skin infections
caused by Staphylococcus intermedius, Staphylococcus aureus,
Streptococcus canis, E. coli, Proteus mirabilis, and Pasteurella multocida.
Although not currently approved for cats, it may also be useful
as well.
Check Digit Verification of cas no
The CAS Registry Mumber 87239-81-4 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 8,7,2,3 and 9 respectively; the second part has 2 digits, 8 and 1 respectively.
Calculate Digit Verification of CAS Registry Number 87239-81:
(7*8)+(6*7)+(5*2)+(4*3)+(3*9)+(2*8)+(1*1)=164
164 % 10 = 4
So 87239-81-4 is a valid CAS Registry Number.
InChI:InChI=1/C21H27N5O9S2/c1-9(2)33-21(30)35-10(3)34-19(29)15-11(6-31-4)7-36-18-14(17(28)26(15)18)24-16(27)13(25-32-5)12-8-37-20(22)23-12/h8-10,14,18H,6-7H2,1-5H3,(H2,22,23)(H,24,27)/b25-13-/t10?,14-,18-/m1/s1
87239-81-4Relevant articles and documents
Preparation method of cefpodoxime acid
-
, (2021/07/31)
The invention discloses a preparation method of cefpodoxime acid. The method comprises the following steps: adding a proper amount of solvent, 7-amino-3-chloromethyl cephalosporanic acid as shown in a formula (III), sodium methoxide, a quaternary ammonium salt catalyst and potassium iodide into a reaction container, performing stirring reaction at 0-80 DEG C for 2-8 hours, then adding 2-(2-amino-4-thiazolyl)-2-(Z)-methoxy imino acetyl chloride as shown in a formula (IV), performing stirring reaction at 0-30 DEG C for 2-5 hours, and after the reaction is finished, performing post-treatment to obtain cefpodoxime acid as shown in a formula (II). The method is simple and easy to operate, high in reaction yield, green and environmentally friendly, avoids the use of inflammable and explosive raw materials with high toxicity, improves the purity of the product by the post-treatment process, and is suitable for industrial production.
General Synthesis of Industrial Cephalosporin-Based Antibiotics Through Amidation with Tosyl Chloride as a Coupling Reagent
Pieper, Matthias,Schleich, Herbert,Gr?ger, Harald
, p. 3259 - 3263 (2019/06/04)
In this contribution we demonstrate the feasibility of a recently developed amidation method for a general synthesis of industrially important semi-synthetic cephalosporin antibiotics starting from readily available 7-aminocephalosporanic acid and derivatives thereof. The amidation process is based on the use of 4-toluene-sulfonyl chloride as an economically attractive coupling reagent in combination with methanol or ethyl acetate as one of the solvent components. A broad reaction scope was shown by the successful synthesis of three further cephalosporin antibiotics with different functionalities, which were obtained in high yields of 82–95 % in the reactions even under non-optimized conditions. It is noteworthy that also different oxime functionalities in the side chain of the 7′-position are tolerated as well as an ester moiety in 4′-position and a cationic functionality in 3′-position. Thus, this amidation process through an activated anhydride formed by means of 4-toluenesulfonyl chloride is a broadly applicable methodology for the synthesis of industrial semi-synthetic cephalosporin antibiotics.
Preparation method of cefpodoxime proxetil
-
, (2017/07/21)
The invention discloses a preparation method of cefpodoxime proxetil. In the method, a compound of formula II is used as an initial raw material, the intermediate compound of formula III is not separated during the process, and a crude product of cefpodoxime proxetil is synthesized by one step; and after that, a simple and easy recrystallization method is adopted for purifying the crude product of cefpodoxime proxetil to obtain cefpodoxime proxetil. In the preparation method disclosed by the invention, the yield is increased without reducing the quality, the obtained product has high purity, the synthesis path is simple, and the preparation method is suitable for industrial production.
