75261-30-2

Upstream product

• 40578-84-5 methyl (2R,3R)-2-(benzothiazol-2'-yldithio)-α-isopropenyl-4-oxo-3-phenoxyacetylaminoazetidine-1-acetate 
• 64370-26-9 methyl (2R,3R)-2-(2'-benzothiazolylthio)-α-isopropylidene-4-oxo-3-phenoxyacetylaminoazetidine-1-acetate 
• 10209-03-7 methyl 6β-phenoxyacetamidopenicillanate-1β-sulfoxide 
• 4888-90-8 phenoxymethylpenicillin sulfoxide 
• 380412-94-2 3-methyl-2-((1R)-7-oxo-3-phenoxymethyl-(1rH,5cH)-4-thia-2,6-diaza-bicyclo[3.2.0]hept-2-en-6-yl)-but-2-enoic acid methyl ester 

Downstream Products

• 87599-77-7 (3S)-3-phenoxyacetamido-1-(1-methoxycarbonyl-2-methylprop-1-enyl)-2-azetidinone 

Relevant academic research and scientific papers

Improved Procedure for Conversion of Penicillin V into Monocyclic β-Lactams

Improved procedures for the preparation of the Kamiya compound (3R,4R)-4-(benzothiazol-2'-yldithio)-3-phenoxyacetamidoazetidin-2-one (6) from penicillin V (1) are described.A novel feature is ozonolysis, near room temperature, in aqueous methanol in the p

Synthesis and antibacterial activity of 3-acylamino-2-azetidinone-1-sulfonic acid derivatives

Sulfazecin is a monocyclic β-lactam antibiotic isolated from strain G-6302, Pseudomonas acidophila. As a key intermediate for the synthesis of sulfazecin derivatives, 3-amino-2-azetidinone was synthesized from penicillins, and various new compounds were s