A New Oxygenated Ursane Derivative from Canthium multiflorum - Traoré, Maminata; Jaroszewski, Jerzy W; Olsen, Carl Erik; Ouédraogo, Jean Bosco; Pierre, Guissou I; Nacoulma, Odile G; Guiguemdé, T Robert; Christensen, S Brøgger (Planta Medica, 2008)