220009-52-9

Upstream product

• 220009-48-3 benzyl 2-O-benzoyl-6-O-benzyl-3-O-[3-(ethyl 2,3,4-tri-O-benzyl-1-thio-α-D-mannopyranosid-6-O-yl)-1,3-dioxopropyl]-α-D-mannopyranoside 
• 98-88-4 benzoyl chloride 
• 73366-72-0 benzyl 4,6-O-benzylidene-α-D-mannopyranoside 
• 316156-93-1 benzyl 2-O-benzoyl-4,6-O-benzylidene-α-D-mannopyranoside 
• 316156-94-2 benzyl 2-O-benzoyl-4,6-O-benzylidene-3-O-[3-(ethyl 2,3,4-tri-O-benzyl-1-thio-α-D-mannopyranosid-6-O-yl)-1,3-dioxopropyl]-α-D-mannopyranoside 

Relevant academic research and scientific papers

Prearranged glycosides. Part 13: Intramolecular mannosylations of glucosamine, galactose, mannose, and rhamnose derivatives via prearranged glycosides

A series of prearranged glycosides 4, 9, 14, 16, 22, 28, 33, 41, and 46, having a benzyl-protected 1-thiomannosyl donor linked through its position 6 via malonate and succinate tethers to various positions of glucosamine, galactose, mannose, and rhamnose acceptors, were prepared and cyclized to the corresponding disaccharides. The configuration at the anomeric center of the products strongly depended on the position of the tether in the acceptor part and could be predicted from the calculated thermodynamic stability of the products. No strong dependence of the diastereoselectivity of the intramolecular glycosylations on the activation conditions and the solvent was observed.

Synthesis of β-mannosides via prearranged glycosides

The choice of activator is decisive for whether the α-(1→4)-linked disaccharide 2α or the anomeric compound 2β is formed from the prearranged glycoside 1. Other β-mannosylsaccharides can also be synthesized selectively by intramolecular glycosylation. Bn