851963-22-9

Upstream product

• 1824-94-8 methyl beta-D-galactopyranoside 
• 104530-15-6 methyl 3,4-O-isopropylidene-6-O-(1-methoxy-1-methylethyl)-β-D-galactopyranoside 
• 851963-40-1 4-Oxo-pentanoic acid (3aS,4R,6R,7R,7aS)-6-methoxy-4-(1-methoxy-1-methyl-ethoxymethyl)-2,2-dimethyl-tetrahydro-[1,3]dioxolo[4,5-c]pyran-7-yl ester 
• 851963-41-2 4-Oxo-pentanoic acid (2R,3R,4S,5R,6R)-4,5-dihydroxy-6-hydroxymethyl-2-methoxy-tetrahydro-pyran-3-yl ester 
• 1125-88-8 benzaldehyde dimethyl acetal 

Downstream Products

• 71117-36-7 methyl 4,6-O-(S)-benzylidene-β-D-galactopyranoside 

Relevant academic research and scientific papers

Hybrid solution/solid-phase synthesis of oligosaccharides by using trichloroacetyl isocyanate as sequestration-enabling reagent of sugar alcohols

(Chemical Equation Presented) An excess of glycosyl acceptor is used in the solution-phase synthesis of oligosaccharides and any unconverted acceptor is removed by using trichloroacetyl isocyanate. A levulinoyl (Lev) ester group is then used as a masked tag in the following "resin-capture-release" purification strategy (see scheme).