Stereoselective C-C Bond Formation in Carbohydrates by Radical Cyclization Reactions; VI. Influence of the Conformation of Anomeric Radicals on the Stereoselectivity of Their Cyclization - De Mesmaeker, Alain; Waldner, Adrian; Hoffmann, Pascale; Mindt, Thomas; Hug, Paul; Winkler, Tammo (Synlett, 1990)