90913-27-2

Upstream product

• 957-68-6 7-Aminocephalosporanic acid 
• 90913-23-8 diphenylmethyl 7β-(tritylamino)-3-(acetoxymethyl)-3-cephem-4-carboxylate 1-oxide 
• 105240-10-6 (6R,7R)-3-Acetoxymethyl-8-oxo-7-(trityl-amino)-5-thia-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 
• 76-83-5 trityl chloride 
• 90913-25-0 diphenylmethyl 7β-(tritylamino)-2α-<(methoxycarbonyl)methyl>-3-(acetoxymethyl)-3-cephem-4-carboxylate 1-oxide 

Downstream Products

• 90913-31-8 diphenylmethyl 7β-amino-2-<(Z)-(methoxycarbonyl)methylene>-3-(acetoxymethyl)-3-cephem-4-carboxylate p-toluenesulfonic acid salt 

Relevant academic research and scientific papers

Synthesis and antibacterial activity of 2-[(methoxycarbonyl)methylene]cephalosporins

The synthesis and in vitro activities of a series of 2-[(methoxycarbonyl)methylene]-3-cephem-4-carboxylic acids with methyl or acetoxymethyl at the 3-position are described. The key step in the synthesis includes the stereospecific formation of the 2-[(Z)