Enantioselective Synthesis of a 2,3,4-Trisubstituted Pyrrolidine from 1-Hydroxymethyl-4-phenylsulfonylbutadiene - Díez, David; Beneitez, M Templo; Marcos, Isidro S; Garrido, N M; Basabe, P; Urones, Julio G (Synlett, 2001)