78072-33-0

Upstream product

• 108-98-5 thiophenol 
• 76335-76-7 (+/-)-4β-carboxymethyl-3α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>azetidin-2-one 
• 64066-71-3 (3S,4R)-3-[(1RS)-1-(p-nitrobenzyloxycarbonyloxy)ethyl]-4-(2-oxoethyl)-2-oxoazetidine 
• 72789-82-3 (3S,4R)-4-(2,2-dimethoxyethyl)-3-[(1RS)-1-(p-nitrobenzyloxycarbonyloxy)ethyl]-2-oxoazetidine 

Downstream Products

• 78072-37-4 Hydroxy-{(3S,4R)-3-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-2-oxo-4-phenylsulfanylcarbonylmethyl-azetidin-1-yl}-acetic acid 4-nitro-benzyl ester 
• 78072-35-2 (+/-)-p-nitrobenzyl 6α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-7-oxo-3-phenylthio-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate 
• 78072-34-1 (+/-)-3α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-1--4β-<(phenylthio)carbonylmethyl>azetidin-2-one 

Relevant academic research and scientific papers

Studies on the Syntheses of Heterocyclic Compounds. Part 877. An Alternative Synthesis of Protected (+/-)-Thienamycin and a Related Compound

An alternative total synthesis of protected (+/-)-thienamycin (2) and an analogue is described. (+/-)-4β-(2,2-Dimethoxyethyl)-3α-*)-1-(-nitrobenzyloxycarbonyloxy)ethyl>azetidin-2-one (5), prepared from isoxazoline derivatives (4), was conve