Synthesis of New Polycyclic β-Lactams via One-Pot Enyne Metathesis and Diels-Alder Reactions - Desroy, Nicolas; Robert-Peillard, Fabien; Toueg, Julie; Hénaut, Charlotte; Duboc, Romain; Rager, Marie-Noëlle; Savignac, Monique; Genêt, Jean-Pierre (Synthesis, 2004)