89702-28-3

Upstream product

• 20881-04-3 1,2:3,5-di-O-isopropylidene-D-xylofuranose 
• 50600-39-0 5-deoxy-5-iodo-1,2-O-isopropylidene-alpha-D-xylofuranose 
• 20031-21-4 1,2-O-isopropylidene-α-D-xylose 
• 100-39-0 benzyl bromide 
• 84258-15-1 5-deoxy-5-iodo-1,2-O-isopropylidene-α-D-ribofuranose 
• 70798-12-8 1,2-O-isopropylidene-3-O-benzyl-α-D-ribofuranoside 

Downstream Products

• 131615-48-0 3-O-Benzyl-4,5-dideoxy-1,2-O-isopropylidene-D-erythro-pent-4-enitol 
• 131566-84-2 1,2-O-isopropylidene-3-O-benzyl-5-deoxy-α-D-ribofuranoside 
• 128164-50-1 2-((3aR,5R,6R,6aR)-6-Benzyloxy-2,2-dimethyl-tetrahydro-furo[2,3-d][1,3]dioxol-5-yl)-ethanesulfonic acid isopropyl ester 

Relevant academic research and scientific papers

Synthesis of nucleosides from 4-methylidenefuranoses: A non-classical electrophilic addition

The reaction of persilylated bases (thymine, uracil, cytosine, and 5-fluorouracil) with either 3-O-benzoyl-5-deoxy-1,2-O-isopropylidene-α-D-erythro-pent-4-enofuranose 6 or its 3-O-benzyl analogue 7 in the presence of N-iodosuccinimide (NIS) afforded two types of product with high stereoselectivity; either (1′S,2′R,3′S)-3′-O-benzoyl- 8-10 or -3′-O-benzyl-5′-deoxy-5′-iodo-1′,2′-O- isopropylidene-4′-oxo-1′-yl-pyrimidines 11-13, respectively, from 1,4-addition with participation of the oxygen atom at the furanoid ring, and either 3′-O-benzoyl- 14-16, or 3′-O-benzyl-5′-deoxy-5′-iodo-1′,2′-O- isopropylidene-β-L-lyxo-4′-yl-pyrimidine and 17-19 resulting from normal electrophilic addition at the exocyclic methylene group. A third compound was isolated from the reaction of 7 with persilylated uracil/NIS and identified as the doubly N,N′-glycosylated pyrimidine 20.

Metal-Graphite Reagents in Carbohydrate Chemistry. 8. The Scope and Limitations of the Use of Zinc/Silver-Graphite in the Synthesis of Carbohydrate-Derived Substituted Hex-5-enals and Pent-4-enals

The compatibility of different organic functional groups with the use of the zinc/silver-graphite reagent was investigated, utilizing 23 6-bromo-6-deoxy- or 6-deoxy-6-iodohexopyranosides and 5-deoxy-5-iodopentofuranose derivatives.These compounds possessed O-acetyl, O-benzoyl, O-methyl-, or O-p-tolylsulfonyl, O-benzyl, O-methyl, O-isopropylidene, epoxy, acetamido deoxy, azido deoxy, chloro deoxy, and deoxy fluoro groups and included a mono and a dideoxy derivative.Reductive dealkoxyhalogenation of these compounds gave, in most instances, a single product, a hex-5- or pent-4-enal, which could be considered a precursor for carbocyclization reactions.Iodides reacted faster than bromides, and pyranose derivatives reacted faster and more cleanly than furanose derivatives.The kinetic or thermodynamic stability of the product enal was found to be structure-dependent.Reduction of the carbon-halogen bond was one of the few side reactions observed.A mechanism for the reductive ring cleavage is proposed.