Hetero Diels-Alder Reactions of Nitroso Alkenes with Alkoxyallene Derivatives Bearing Carbohydrate Auxiliaries: Asymmetric Synthesis of 6H-1,2-Oxazines and Subsequent Reductive Transformations - Zimmer, Reinhold; Orschel, Beate; Scherer, Stefan; Reissig, Hans-Ulrich (Synthesis, 2002)