89102-18-1

Upstream product

• 89102-16-9 [(E)-3-Furan-2-yl-prop-2-en-(Z)-ylideneamino]-acetic acid tert-butyl ester 
• 6456-74-2 Glycine tert-butyl ester 
• 39511-08-5 (E)-3-(2-furanyl)-2-propenal 
• 701-99-5 Phenoxyacetyl chloride 

Downstream Products

• 89102-19-2 3-[(2R,3S)-1-tert-Butoxycarbonylmethyl-4-oxo-3-(2-phenoxy-acetylamino)-azetidin-2-yl]-propionic acid 
• 89102-25-0 (6R,7S)-3-(2-Amino-ethylsulfanyl)-8-oxo-7-(2-phenoxy-acetylamino)-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid 
• 89102-24-9 (6R,7S)-3-[2-(4-Nitro-benzyloxycarbonylamino)-ethylsulfanyl]-8-oxo-7-(2-phenoxy-acetylamino)-1-aza-bicyclo[4.2.0]oct-2-ene-2-carboxylic acid tert-butyl ester 
• 89102-20-5 [(3S,4R)-2-Oxo-3-(2-phenoxy-acetylamino)-4-(2-phenylsulfanylcarbonyl-ethyl)-azetidin-1-yl]-acetic acid tert-butyl ester 
• 89102-23-8 3-methoxy-1-carbacephem 
• 89102-21-6 [(1S,6R)-3,8-Dioxo-2-(2-phenoxy-acetyl)-2,7-diaza-bicyclo[4.2.0]oct-7-yl]-acetic acid tert-butyl ester 
• 89102-22-7 3-hydroxy-(+/-)-1-carbacephem 

Relevant academic research and scientific papers

A simple synthesis of (±)-1-carbacephem derivatives

The Dieckmann condensation of the phenylthioester of 4-(1-t-butoxycarbonylmethyl-3-phenoxyacetamido-azetidin-2-one-4-yl)butylic acid affords a simple route to 3-substituted-8-oxo-7-phenoxyacetamido-1-azabicyclo[4,2,0]oct-2-ene-2-carb oxylic acids.