From glycals

Korytnyk and coworkers - " were the first to apply Xep2 (Refs. 321 -323) in the synthesis of 1,2-difluorides from glycals. This reagent, although expensive, is solid and can be conveniently used in the laboratory. Treat-... 

Reaction Products and the Yields from Glycals with MeCOjF... 

A refined version of this reaction was used to obtain opticaliy active 3 from glycal 2. This product is readily converted to the tetrahydropyran 4, a subunit of the antibiotic indanomycin. 

Typical Procedure for the Preparation of Selenoglycosides from Glycals... 

Scheme 5.53 Preparation of glycosyl donors from glycals using PhSCI and PhSeCI.

Scheme 5.54 Preparation and use of 2-deoxy-2-fluoro-glycosyl donors from glycals.

Scheme 5.56 Routes to 2-amino-2-deoxy-glycosides from glycals.

General Method for the Preparation of 2-Deoxy-2-lodoglycosylbenzenesulfo-namides from Glycals and Its Use as Glycosyl Donors in the Synthesis of 2-Benzene-sulfonamido-2-Deoxy-P-Glycosides... 

Scheme 29 One-pot synthesis of a-C-glycosyl compounds from glycals using organo-aluminium and organoboron reagents.

Palladium catalyzed cross-coupling reactions of 1-substituted glycals have not only been limited to tributylstannyl derivatives. In fact, the versatility of this approach is significantly enhanced by the fact that C-l zinc-, indium-, or iodine-substituted glycals (easily accesible from glycals, see Scheme 7)... 

Scheme 6.4 One-pot synthesis of glycosyl phosphates from glycals.

Scheme 36 Synthesis of the Pentasaccharide Core as the Glycosyl Azide from Glycal Precursors13931...

I. Hanna, J. Pan, and J. Y. Lallemand, Optically active cyclobutanones from glycals Preparation and regioselective cleavage, Synlett p. 510 (1991). 

S. J. Danishefsky, Route from glycals to mannose p-glycosides, J. Org. Chem. 59 1892 (1994) G. Stork and G. Kim, Stereocontrolled synthesis of disaccharides via the temporary silicon connection, J. Am. Chem. Soc. 114 1081 (1992) P. J. Garegg, Saccharides of biological importance Challenges and opportunities for otganic synthesis, Acc. Chem. Res. 25 575(1992). 

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