109170-54-9

Upstream product

• 105620-48-2 (3S,4S)-4-Ethynyl-3-((S)-1-hydroxy-ethyl)-1-(4-methoxy-phenyl)-azetidin-2-one 
• 75-36-5 acetyl chloride 
• 105620-52-8 dl 3,4-trans-1-(p-methoxyphenyl)-3-acetyl-4-ethylyl-2-azetidinone 
• 64-19-7 acetic acid 

Downstream Products

• 109279-02-9 (3R,4R)-4-Ethynyl-3-((R)-1-hydroxy-ethyl)-1-(4-methoxy-phenyl)-azetidin-2-one 
• 123537-14-4 (3S,4S)-4-Ethynyl-3-((S)-1-hydroxy-ethyl)-1-(4-methoxy-phenyl)-azetidin-2-one 
• 105662-84-8 (3S,4S)-4-Ethynyl-3-((R)-1-hydroxy-ethyl)-1-(4-methoxy-phenyl)-azetidin-2-one 
• 105620-64-2 (3S,4S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1-(4-methoxy-phenyl)-4-phenylsulfanylethynyl-azetidin-2-one 
• 105620-63-1 (3S,4S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-4-ethynyl-1-(4-methoxy-phenyl)-azetidin-2-one 
• 90629-36-0 3(S)-<1(R)-<(tert-butyldimethylsilyl)oxy>ethyl>-4(S)-<(phenylthio)ethynyl>azetidin-2-one 
• 123809-54-1 {(3S,4R)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-2-oxo-4-phenylsulfanylcarbonylmethyl-azetidin-1-yl}-oxo-acetic acid benzyl ester 
• 124752-39-2 (5R,6S)-6-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-7-oxo-3-phenylsulfanyl-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid benzyl ester 
• 90628-93-6 {(S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-4-oxo-azetidin-2-yl}-thioacetic acid S-phenyl ester 

Relevant academic research and scientific papers

ASYMMETRIC HYDROLYSIS OF dl 3-(1-BENZOYLOXYETHYL)-AZETIDINONE DERIVATIVE AND CHEMICAL CONVERSION TO CARBAPENEM

Asymmetric hydrolysis of dl R* benzoate (dl 3) was achieved effectively by Bacillus subtilis to give the optically-active R-hydroxyethyl azetidinone 8, and this product 8 was converted chemically into the known β-azetidinyl acetyl thioester der