143697-29-4

Upstream product

• 143697-28-3 4-Pentenyl 3,4-O-isopropylidene-α-L-fucopyranoside 
• 824-94-2 p-methoxybenzyl chloride 
• 143697-28-3 Pent-4-enyl 3,4-O-isopropylidene-β-L-fucopyranoside 
• 821-09-0 n-Pent-4-enyl alcohol 
• 676518-78-8 1-O-(4-pentenyl) 2,3,4-tri-O-acetyl-β-L-fucopyranoside 
• 143416-55-1 1-O-(4-pentenyl) β-L-fucopyranoside 
• 16741-27-8 2,3,4-tri-O-acetyl-α-L-fucopyranosyl bromide 
• 75247-29-9 (2R,3S,4R,5R,6S)-2-bromo-6-methyltetrahydro-2H-pyran-3,4,5-triyl triacetate 
• 676518-72-2 1-O-(4-pentenyl) 2,3,4-tri-O-acetyl-α-L-fucopyranoside 
• 143416-54-0 1-O-(4-pentenyl) α-L-fucopyranoside 

Downstream Products

• 143697-30-7 C₄₂H₆₄O₁₈ 
• 143697-31-8 C₄₂H₆₄O₁₈ 

Relevant academic research and scientific papers

Total Synthesis of Tri-, Hexa- and Heptasaccharidic Substructures of the O-Polysaccharide of Providencia rustigianii O34

A general and efficient strategy for synthesis of tri-, hexa- and heptasaccharidic substructures of the lipopolysaccharide of Providencia rustigianii O34 is described. For the heptasaccharide seven different building blocks were employed. Special features of the structures are an α-linked galactosamine and the two embedded α-fucose units, which are either branched at positions-3 and -4 or further linked at their 2-position. Convergent strategies focused on [4+3], [3+4], and [4+2+1] couplings. Whereas the [4+3] and [3+4] coupling strategies failed the [4+2+1] strategy was successful. As monosaccharidic building blocks trichloroacetimidates and phosphates were employed. Global deprotection of the fully protected structures was achieved by Birch reaction.