Efficient Solution and Solid-Phase Synthesis of a 3,9-Diazabicyclo[3.3.1]non-6-en-2-one Scaffold - Orain, David; Canova, Riccardo; Dattilo, Michele; Klöppner, Edgar; Denay, Régis; Koch, Guido; Giger, Rudolf (Synlett, 2002)