131724-82-8Relevant articles and documents
Slow glycosylation: Activation of trichloroacetimidates under mild conditions using lithium salts and the role of counterions
Korber, Nora Katharina,Pedersen, Christian Marcus
supporting information, (2022/01/19)
Glycosylations were carried out with the two glycosyl donors 4-O-acetyl-2,3-O-isopropylidene-1-O-trichloroacetimidoyl-α-L-rhamnopyranose and 2,3,4-tri-O-benzyl-1-O-trichloro-acetimidoyl-α-L-rhamnopyranose in combination with the two alcohols 1-adamantanol and L-menthol as model glycosyl acceptors. As catalysts, the five lithium salts LiNTf2, LiI, LiClO4, LiPF6 and LiOTf were investigated. We demonstrated that both lithium and the respective counterions are playing a role in the activation of trichloroacetimidate glycosyl donors at rt. Under these very mild conditions, the glycosylations are slow and completed in two to eight days. Depending on the counterion, the rate and yield of the reaction differs; however, the selectivity of all investigated lithium salts is deficient.
A concise synthesis of rhamnan oligosaccharides with alternating α-(1→2)/(1→3)-linkages and repeating α-(1→3)-linkages by iterative α-glycosylation using disaccharide building blocks
Tanaka, Hidenori,Hamaya, Yu,Nishiwaki, Nagatoshi,Ishida, Hideharu
, p. 23 - 31 (2017/11/27)
A concise synthetic route to rhamnan oligosaccharides with alternating α-(1→2)/(1→3)-linkages and repeating α-(1→3)-linkages is reported. This synthesis was achieved by iterative α-glycosylation using disaccharide building blocks and through orthogonal co
Synthesis of all eight stereoisomeric 6-deoxy-l-hexopyranosyl donors - Trends in using stereoselective reductions or mitsunobu epimerizations
Frihed, Tobias Gylling,Pedersen, Christian Marcus,Bols, Mikael
, p. 7924 - 7939 (2015/02/18)
The synthesis of all eight rare but biologically important 6deoxy-L-hexoses as their thioglycoside glycosyl donors starting from the commercially available L-rhamnose or L-fucose is reported. The synthesis of all eight 6-deoxy-L-hexoses was accomplished u