54240-49-2

Upstream product

• 32944-72-2 7-(phenylacetamido)-3-(((2-methyl-1,3,4-thiadiazol-5-yl)thio)methyl)-3-cephem-4-carboxylic acid 
• 47653-82-7 (6R,7R)-3-((1-methyl-1H-tetrazol-5-ylthio)methyl)-8-oxo-7-(2-phenylacetamido)-5-thia-1-aza-bicyclo [4.2.0]oct-2-ene-2-carboxylic acid 
• 26382-85-4 (6R)-3-acetoxymethyl-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid; sodium salt 
• 859-07-4 cephaloram 

Downstream Products

• 84532-30-9 3-hydroxy-7-phenylacetamido-3-cephem-4-carboxylic acid benzhydrylester 
• 51761-84-3 (6R)-7t-amino-3-methylene-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2c-carboxylic acid benzhydryl ester 
• 51762-33-5 (6R)-3-butoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 51795-12-1 (6R)-3ξ-acetoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid benzhydryl ester 
• 51761-94-5 (6R)-3-acetoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 54639-51-9 (6R)-3-methoxyimino-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid benzhydryl ester 
• 54639-54-2 (6R)-2-methyl-3,8-dioxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid benzhydryl ester 
• 51761-93-4 (6R)-3-methoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 51762-51-7 (6R)-3ξ-hydroxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]octane-2ξ-carboxylic acid benzhydryl ester 
• 51761-98-9 (6R)-7t-amino-3-methoxy-8-oxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid benzhydryl ester 
• 51762-28-8 (6R)-3-methoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid methyl ester 
• 51762-07-3 (6R)-3-methoxy-8-oxo-7t-(2-phenyl-acetylamino)-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 
• 54639-48-4 (6R,7R)-benzhydryl 3-hydroxy-8-oxo-7-(2-phenylacetamido)-5-thia-1-azabicyclo[4.2.0]oct-2-ene-2-carboxylate 
• 53824-89-8 N-((6R)-3,8-dioxo-(6rH)-5-thia-1-aza-bicyclo[4.2.0]oct-7t-yl)-2-phenyl-acetamide 

Relevant academic research and scientific papers

De-esterification process

An efficient process for de-esterification has been provided for by application of special tetrahalogenides. By applying this process a new compound, viz. cefesone, and especially the E-isomer thereof, has been prepared.

Titanium tetrachloride promoted hydrolysis of cephalosporin tert-butyl esters

Titanium tetrachloride was used as a mild and effective deprotective reagent for the hydrolysis of cephalosporin tert-butyl esters. Yields up to 91% were obtained.

Synthesis of 3-alkylidenecepham-4-carboxylic acid derivatives by samarium(II) iodide reduction

Samarium(II) iodide promoted reductive deacetoxylation of 7-aminocephalosporanic acid derivatives to synthesize 3-alkylidenecepham-4-carboxylates, which could be valuable intermediates for the synthesis of new cephalosporin antibiotics, was investigated.