86258-95-9

Upstream product

• 2216-51-5 (-)-menthol 
• 96035-87-9 (2S,3R)-1-[Bis-(4-methoxy-phenyl)-methyl]-4-oxo-3-vinyl-azetidine-2-carbonyl chloride 
• 19293-62-0 p,p'-dimethoxybenzhydrylamine 
• 86207-14-9 [(E)-Bis-(4-methoxy-phenyl)-methylimino]-acetic acid butyl ester 
• 86207-15-0 (3RS,4RS)-4-n-butoxycarbonyl-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone 
• 86207-16-1 (3RS,4SR)-4-carboxy-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone 

Downstream Products

• 86258-96-0 (3R,4S)-4-carboxy-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone 
• 76899-07-5 (3R,4R)-3-[(R)-1-(tert-butyldimethylsilyloxy)ethyl]-4-acetoxyazetidin-2-one 
• 137664-91-6 (3R,4S)-4-methoxycarbonyl-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone 
• 72888-48-3 (3R,4R)-4-acetoxy-3-<(R)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-2-azetidinone 
• 137683-88-6 (3R,4R)-4-acetoxy-1-(di-p-anisylmethyl)-3-<(R)-1-(tert-butyldimethylsilyloxy)ethyl>-2-azetidinone 
• 91603-19-9 (3R,4R)-4-acetoxy-1-(di-p-anisylmethyl)-3-<(R)-1-p-nitrobenzyloxycarbonyloxyethyl>-2-azetidinone 
• 137765-47-0 (3R,4R)-4-acetoxy-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone 
• 86258-97-1 (3S,4S)-4-carboxy-1-(di-p-anisylmethyl)-3-<(R)-1-hydroxyethyl>-2-azetidinone 
• 1233825-17-6 (3R,4R)-4-acetoxy-1-(di-p-anisylmethyl)-3-<(R)-1-hydroxyethyl>-2-azetidinone 

Relevant academic research and scientific papers

Synthetic studies of carbapenem and penem antibiotics. I. Facile synthesis of a key intermediate: 4-Acetoxy-3-(1-hydroxyethyl)-2-azetidinone

A highly efficient synthesis of (3R,4R)-4-acetoxy-3-[(R)-1-hydroxyethyl]-2-azetidinone, which is a key intermediate for the synthesis of carbapenem and penem antibiotics, was accomplished. It was found that oxymercuration-reduction of easily obtainable 4-alkyloxycarbonyl-1-(di-p-anisylmethyl)-3-ethenyl-2-azetidinone could be employed as a key stereoselective reaction. The chiral starting material was obtained by optical resolution or asymmetric (2 + 2) cycloaddition. The desired product was afforded in four steps, that is, oxymercuration-reduction, oxidative decarboxylation, protection of the hydroxy group and removal of the N-protecting group.

Antibacterial β-lactam compounds

Novel β-lactam compounds classified into penem compounds, a process for preparing the same and use of such β-lactam compounds are disclosed. These β-lactam compounds exhibit excellent antimicrobial activities useful as pharmaceuticals or they are important intermediates for the synthesis of compounds having antimicrobial activities.