Synthesis of α-(1->2)-, α-(1->3)-, α-(1->4)-, and α-(1->5)-C-Linked Disaccharides through 2,3,4,6-Tetra-O-acetylglucopyranosyl Radical Additions to 3-Methylidene-7-oxabicycloheptan-2-one Derivatives

Article abstract of DOI:10.1021/jo00033a032

The "naked sugar" (+)-1 (1R,2S,4R)-2-cyano-7-oxabicyclo<2.2.1>hept-5-en-2-yl (1S')-camphanate) has been converted into (+)-(1R,4R,5R,6R)-3-methylidene-5-exo,6-exo-(isopropylidenedioxy)-7-oxabicyclo<2.2.1>heptan-2-one ((+)-3) and (-)-(1S,4R,5R,6R)-5-exo-(b