Inhibitory Effect of Xanthomicrol and 3α-Angeloyloxy-2α-hydroxy-13,14Z-dehydrocativic Acid from Brickellia paniculata on the Contractility of Guinea-Pig Ileum - Meckes, Mariana; Calzada, Fernando; Paz, Daniel; Rodríguez, Jaime; Ponce-Monter, Héctor (Planta Medica, 2002)