117901-04-9

Upstream product

• 117901-02-7 [[(2R,3R)-3-(tert-Butyl-diphenyl-silanyloxymethyl)-oxiranecarbonyl]-(4-methoxy-phenyl)-amino]-acetic acid tert-butyl ester 
• 117901-03-8 (2S,3S)-3-[(S)-2-(tert-Butyl-diphenyl-silanyloxy)-1-hydroxy-ethyl]-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 

Downstream Products

• 117901-08-3 (2S,3R)-1-(4-Methoxy-phenyl)-4-oxo-3-vinyl-azetidine-2-carboxylic acid tert-butyl ester 
• 117901-09-4 (2S,3R)-3-Ethyl-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 
• 92685-90-0 (2S,3S)-3-((R)-1-Hydroxy-ethyl)-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 
• 97363-07-0 (2S,3S)-3-((R)-1-((tert-butyldimethylsilyl)oxy)ethyl)-1-(4-methoxyphenyl)-4-oxoazetidine-2-carboxylic acid 
• 117901-05-0 (2S,3S)-1-(4-Methoxy-phenyl)-3-(S)-oxiranyl-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 
• 203252-14-6 (2R,3R)-3-((R)-1-(tert-butyldimethylsilyloxy)ethyl)-1-(4-methoxyphenyl)-4-oxoazetidin-2-yl acetate 
• 117901-06-1 (2S,3S)-3-[(R)-1-(tert-Butyl-dimethyl-silanyloxy)-ethyl]-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 
• 117901-07-2 (2S,3S)-3-[(S)-1,2-Bis-(toluene-4-sulfonyloxy)-ethyl]-1-(4-methoxy-phenyl)-4-oxo-azetidine-2-carboxylic acid tert-butyl ester 

Relevant academic research and scientific papers

A NEW ENANTIO AND DIASTEREOSELECTIVE SYNTHESIS OF 2-AZETIDINONES AS USEFUL INTERMEDIATES OF β-LACTAM ANTIBIOTICS

An expeditious enantio and diastereoselective route to β-lactam synthons has been developed; two novel key radical reactions allowed us to obtain two useful intermediates in the synthesis of thienamycin and PS-5.