65991-26-6

Upstream product

• 65750-59-6 2-(4-nitrobenzyloxycarbonylamino)ethanethiol 
• 78072-36-3 (5R,6S)-3-(Diphenoxy-phosphoryloxy)-6-[(R)-1-(4-nitro-benzyloxycarbonyloxy)-ethyl]-7-oxo-1-aza-bicyclo[3.2.0]hept-2-ene-2-carboxylic acid 4-nitro-benzyl ester 
• 105995-50-4 magnesium 4-nitrobenzyl malonate 
• 133380-98-0 (5RS,6RS,8RS)-p-nitrobenzyl 3-diphenylthiophosphinoyl-6-(1-p-nitrobenzyloxycarbonyloxyethyl)-7-oxo-1-azabicyclo<3.2.0>hept-2-ene-2-carboxylate 
• 67245-93-6 Carbonic acid 4-nitro-benzyl ester 1-((2R,3R)-2-{(E)-2-[2-(4-nitro-benzyloxycarbonylamino)-ethylsulfanyl]-vinyl}-4-oxo-azetidin-3-yl)-ethyl ester 
• 76335-78-9 p-nitrobenzyl (+/-)-cis-6β-<(1S^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-3,7-dioxo-1-azabicyclo<3.2.0>heptane-2-carboxylate 
• 73155-38-1 (6RS,7RS,9RS)-7-(1-hydroxyethyl)-8-oxo-3-oxa-1-azabicyclo<4.2.0>octane-2-spirocyclohexane 
• 76347-45-0 p-nitrobenzyl (3RS,4RS)-4-<3-<(1RS)-1-p-nitrobenzyloxycarbonyloxyethyl>-2-oxoazetidin-4-yl>-3-oxobutanoate 
• 76335-78-9 (5RS,6RS,8RS)-p-nitrobenzyl 3,7-dioxo-6-(1-p-nitrobenzyloxycarbonyloxyethyl)-1-azabicyclo<3.2.0>heptane-2-carboxylate 
• 106673-91-0 7-acetyl-7-chloro-8-oxo-3-oxa-1-azabicyclo<4.2.0>octane-2-spirocyclohexane 
• 106673-95-4 (6RS,9RS)-7-chloro-7-(1-hydroxyethyl)-8-oxo-3-oxa-1-azabicyclo<4.2.0>octane-2-spirocyclohexane 
• 76347-45-0 (+/-)-3α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-4β-(3-p-nitrobenzyloxycarbonyl-2-oxopropyl)azetidin-2-one 
• 76335-78-9 (+/-)-p-nitrobenzyl 6α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>-3,7-dioxo-1-azabicyclo<3.2.0>heptane-2-carboxylate 
• 76335-76-7 (+/-)-4β-carboxymethyl-3α-<(1R^*)-1-(p-nitrobenzyloxycarbonyloxy)ethyl>azetidin-2-one 

Relevant academic research and scientific papers

Azetidinone derivatives, a process for their preparation and their use as intermediates in the preparation of carbapenem antibiotics

Compounds of formula (I): STR1 (wherein R1 represents hydrogen or a hydroxy-protecting group, R2 and R3 represent hydrogen, alkyl or aryl; R4 represents optionally substituted alkyl, alicyclic heterocyclic, aryl

Olivanic Acid Analogues. Part 8. Halogenation and Sulphenylation Reactions leading Selectively to cis-Carbapenem Precursors; Stereospecific Synthesis of (+/-)-6-Epithienamycin

Introduction of halogen or sulphenyl substituents at C-7 of ketone 1, followed by stereospecific reduction steps, provides a selective route either to the (6RS,7RS,9RS) isomer 11 or to the (6RS,7RS,9SR) isomer 14 of 7-(1-hydroxyethyl)-8-oxo-3-oxa-1-azabic

Total Synthesis of (+/-)-Epithienamycins A and B and Derivatives

(+/-)-(3R*,4R*)-4-(2,2-Dimethoxyethyl)-3-*)-1-hydroxyethyl>azetidin-2-one (7), which has been stereoselectively synthesised via the 4-methoxycarbonylisoxazoline (4), was converted into (+/-)-epithienamycins A (2) and B

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

Thienamycin Total Synthesis. 3. Total Synthesis of (+/-)-Thienamycin and (+/-)-8-Epithienamycin

The completion of the total synthesis of (+/-)-8-epithienamycin and (+/-)-thienamycin from azetidinones 3a and 3b using the methodology developed for the synthesis of model compound 4 (see part 2) is described.