New Synthetic Routes toward Enantiopure (2S,3R,4R)-4-Hydroxyisoleucine by 1,3-Dipolar Cycloaddition of a Chiral Nitrone to C4 Alkenes - Aouadi, Kaiss; Jeanneau, Erwann; Msaddek, Moncef; Praly, Jean-Pierre (Synthesis, 2007)