An α-selective, visible light photocatalytic glycosylation of alcohols with selenoglycosides
Exceptionally mild procedures for the visible light photocatalytic activation of selenoglycoside donors in the presence of alcohol acceptors have been developed. This process is demonstrated with both 1-phenylselenyl-2,3,4,6- tetra-O-benzyl glucoside (1) and 1-phenylselenyl-2,3,4,6-tetra-O-benzyl galactoside (2). Catalysis is effected with both metal (Ru(bpy)3) and organocatalysts (diphenyldiselenide). Reactions afford, in all cases, primarily the α-anomers with selectivities that vary with solvent. This represents the first example of a visible light-promoted O-glycosylation. © 2013 Elsevier Inc. All rights reserved.
Publication Source (Journal or Book title)
Spell, M., Wang, X., Wahba, A., Conner, E., & Ragains, J. (2013). An α-selective, visible light photocatalytic glycosylation of alcohols with selenoglycosides. Carbohydrate Research, 369, 42-47. https://doi.org/10.1016/j.carres.2013.01.004