Expedited Synthesis of Substituted Dipyrrolo[3,4-a:3,4-c]carbazole-1,3,4,6-tetraones Structurally Related to Granulatimide - Hénon, Hélène; Anizon, Fabrice; Kucharczyk, Nathalie; Loynel, Armelle; Casara, Patrick; Pfeiffer, Bruno; Prudhomme, Michelle (Synthesis, 2006)