128989-98-0

Upstream product

• 24424-99-5 di-tert-butyl dicarbonate 
• 102192-12-1 [(3S,4R)-3-Amino-2-oxo-4-((E)-styryl)-azetidin-1-yl]-acetic acid 4-nitro-benzyl ester 
• 102192-11-0 oxo-2 (phenyl-2 vinyl)-4 phtalimido-3 azetidine-1-acetate de p-nitrobenzyle (3-R,S)(4-S,R)(E) 
• 14371-10-9 (E)-3-phenylpropenal 
• 7352-64-9 glycine 4-nitrobenzyl ester 

Downstream Products

• 102192-13-2 <(tert-butoxycarbonyl)amino>-3 (hydroxymethoxymethyl)-4 oxo-2 azetidine-1-acetate de p-nitrobenzyle (3-R,S)(4-R,S) 
• 128990-05-6 acide<<(tritylamino-2 thiazolyl-4)(methoxyimino)-acetyl>amino>-7 methoxy-3 oxo-8 thia-4 aza-1 bicyclo<4.2.0> octene-2 carboxylique-2(6-R,S)(7-R,S)(Z) 
• 102192-15-4 <(tert-butoxycarbonyl)amino>-3 oxo-2 <(p-toluenesulfonyloxy)methyl>-4 azetidine-1-acetate de p-nitrobenzyle (3-R,S)(4-R,S) 
• 102192-17-6 <(tert-butoxycarbonyl)amino>-7 methylthio-3 oxo-8 thia-4 aza-1 bicyclo<4.2.0> octene-2 carboxylate-2 de p-nitrobenzyle (6-R,S)(7-R,S) 
• 128990-00-1 <(tert-butoxycarbonyl)amino>-7 methoxy-3 oxo-8 thia-4 aza-1 bicyclo<4.2.0> octene-2 carboxylate-2 de p-nitrobenzyle (6-R,S)(7-R,S) 
• 128989-99-1 <(tert-butoxycarbonyl)amino>-7 dioxo-3,8 thia-4 aza-1 bicyclo<4.2.0> octane-carboxylate-2 de p-nitrobenzyle (6-R,S)(7-R,S) 
• 102192-16-5 <(tert-butoxycarbonyl)amino>-7 mercapto-3 oxo-8 thia-4 aza-1 bicyclo<4.2.0> octene-2 carboxylate-2 de p-nitrobenzyle (6-R,S)(7-R,S) 
• 102192-14-3 <(tert-butoxycarbonyl)amino>-3 hydroxymethyl-4 oxo-2 azetidine-1-acetate de p-nitrobenzyle (3-R,S)(4-R,S) 

Relevant academic research and scientific papers

Synthese totale d'isocephemes heterosubstitues en 3

Base promoted reaction of a suitably substituted N-carboxymethyl-azetidinone 9 with carbon disulfide or carbon oxysulfide, leads conveniently to 3-heterosubstituted-2-isocephems in good to excellent yield.